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general chemistry tagged articles (0-50 of 8853)

  • An opportunity to earn college level credit - Advanced placement chemistry is a course and examination that is offered by the college board which is a part of Advanced Placement Program to give American and Canadian high school students an opportunity that demonstrates their abilities and earn them a college level credit. The course is highly motivated towards students who are interested in chemical and physical sciences including biological sciences.
  • Study of molecular structures in three dimensional space - In the study of organic chemistry, very often we come across different organic compounds which have same molecular formula.
  • Soft corner of harsh chemicals - Chemical compounds have been employed for a number of useful purposes. For example, sugar is used to sweeten, soaps and detergents are used for cleansing. A number of chemical compounds find application in agriculture, textiles, medicines, photography, etc. The chemicals play an important role in our daily life and in a number of biological processes. Chemical substances are used for the treatment of diseases and for reducing suffering from pain. Use of some chemical compounds as medicines has helped humanity in a number of ways. Medicines have been used to cure diseases, to reduce suffering from pain and also to check population explosion.
  • What You Need to Know About AP Chemistry - Advanced Placement Chemistry (AP Chem) is only one of the 35 Advanced Placement courses (in over 20 different subjects) participated in by over a million gifted, talented, and/or highly motivated students each year. Each student of AP Chem will become well acquainted, if not completely familiar with a multitude of subject matter including, but not limited to: chemical bonds, chemical reactions, chemical equilibrium, properties and phases of matter and solutions, nuclear chemistry, reaction kinetics, atomic theory, stoichiometry, and thermodynamics.
  • Disappearing breed of hydrogen - Water a very common chemical substance which is essential for the survival of all life forms on this Earth. Volumetric and gravimetric composition of water are 2:1 and 1:8 (H:O respectively).
  • Constructive and destructive short range forces - Nucleus is found to be a source of tremendous amount of energy which has been utilized for the destructive as well as constructive purposes. Hence the study of nucleus of an atom has become so important that it is given a separate branch of chemistry under the heading of nuclear chemistry. We know that the nucleus occupies the central position in an atom. Nearly all the mass of an atom is concentrated in the nucleus. Since nucleus has a radius of only about 10-15m, the density of nucleus is enormous, more than 1012 times that of lead. Although about 20 different particles have been detected as the product of different nuclear reactions, it does not mean that all these particles are present in the nucleus.
  • Transformation and diversities of elementary particles - We are familiar with many chemical changes occurring around us. In such changes, substances are undergoing permanent changes and new substances are formed. When different substances react and new substances having different nature and identity are formed, we say a chemical reaction has occurred. In the language of science, a chemical reaction is a process which transforms one or more substances into new substances. During chemical reactions, new substances with new properties are formed. The substances which take part in the chemical reaction are called reactants. The substances which are formed as a result of chemical reactions are called as products.
  • The Importance Of Building Chemistry - Just like a hero and a heroine on the movies who sizzle with passion on the big screen, you and your date should have some chemistry on your big night out. Once you have gotten over the preliminaries of asking for your date's number and setting up a date, the next problem is what to do when you are already sitting opposite each other on the dinner table. Men and women alike would like to experience being swept off their feet and feel the natural high of being in love.
  • Chemistry - The Central Science - In modern thought, Chemistry (from Egyptian – Chem or Keme meaning “earth” or “black”, due to the rich soil) is connected to almost all other natural sciences: astronomy, biology, geology, material science, physics, etc. The subcategories of chemistry are getting more specialized as time passes and the understanding of the composition and structure of matter increases. Some of the basic subdisciplines of matter studied include (but are not limited to): analytical chemistry, biochemistry, inorganic chemistry, nuclear chemistry, organic chemistry, physical chemistry, and theoretical chemistry.

  • 10 Signs That Your Brain Chemistry Is Out of Balance - Your brain chemistry drives you – it drives your energy levels, your moods, your thoughts, actions, behaviors, your beliefs, your desires, dreams, and motivations. And these all drive your brain chemistry in turn. Neurotransmitters, such as serotonin and dopamine, create and reflect your feelings moods, thoughts and behaviors. They are a powerful group of chemicals in the brain that result in physiological and psychological changes in how we experience our lives.
  • Saving A Passionless Relationship - There are some relationships out there, maybe one out of every hundred thousand, that seems to be the stuff that producers of romantic comedies dream of. Everything seems to fall into place for the couple, and their relationship only gets stronger as time goes by. These are the couples that make the rest of us look miserable. Then, of course, there’s the rest of us. The smallest mistake or slip-up could be the stuff that throws relationships on the rocks, and these things can take up to months to clean up. Many of us do manage to stay together and work things out, but other relationships simply get sour and fall apart in the end. Which of the two categories does your relationship resemble more?
  • Insidious Depression - Depression is awful – in whatever form you may experience it. You would think that something that feels so bad would propel you to do anything to get rid of it. You know- like a noxious substance that we accidentally eat and then get violent spasms to vomit. You’d think that if you are feeling depressed you would be hightailing it to engage in some of the known effective strategies for getting rid of depression. You might visit your doctor for an anti-depressant or your local therapist for cognitive behavioral therapy. You’d start exercising. You’d be getting out in the sunlight more. You’d change your diet. You’d learn to meditate and develop a mindful approach to life. You’d take some nutritional supplements like 5HTP or St. John’s Wort.
  • Prominent properties of surface chemistry - There are many properties of matter which are related to their surface. These surface properties become prominent when the material is present in finely divided form or if its surface is rough. Under these conditions, surface area of the material increases enormously and large amount of the substance is present at the surface. If we consider a liquid or a solid substance then we find that a molecule which is present in the bulk of the substance is being attracted uniformly from all sides by the neighbouring molecules and hence there is no net force acting on the molecule and there are no unbalanced forces of the molecule.
  • Million years of survival - Oxygen is a colorless, odorless and tasteless gas slightly soluble in water. It is soluble in alkaline pyrogallol. It is slightly heavier than air. It can be liquefied by cooling under pressure to a pale blue liquid. It can also be solidified into a bluish white solid at -291ºC. It is not inflammable but a supporter of combustion. It is paramagnetic. It exists in three isotopic forms with mass numbers 16, 17 and 18.
  • Non sticking brown colored hydrate - Corrosion is a matter of common observation that certain metals are slowly eaten up on long exposure to atmosphere. For example: silver gets tarnished, copper develops green coating on its surface, iron gets rusted and lead loses its luster. In fact, such metals react with the gases or moisture present in the environment to form undesirable compounds. Corrosion is the process of slow conversion of metals into their undesirable compounds by reaction with moisture and other gases present in the atmosphere. The more active metals are more prone to corrosion.
  • Calculation of quantitative relationships of reactants and products - The method describe for determining atomic and molecular masses constitute the beginning of a general approach to chemical calculations and quantitative methods called chemical stoichiometry. It is the area of chemistry and chemical technology on which the determination of the quantities of reactants or products of a chemical reaction is based. Here the quantity of substance ranges from laboratory scale (gm, milligram) to production scale (few Kg to several tons).
  • A Hard Look at How Advanced Subjects Like Chemistry Are Viewed - It’s time to discuss chemistry, algebra, mythology, and many other chosen standard curriculum and how they affect our lives (or don’t). When we look at today’s declining graduation rate, we love our typical scapegoats: lack of parental interaction, the internet, the economy, and so on. While the fact that these have an effect is most certainly true, perhaps we should look a little deeper. Let’s face it, people: we are in the “New Millennium.
  • Med Students It's Time for the MCAT - The Medical College Admission Test covers a broad range of science, verbal and writing components. Most medical schools take into consideration your college transcript and your MCAT score. This particular test is a good indication as to whether you would possess a solid foundation on which to build a successful medical career. The MCAT is a test that lasts for 5.5 hours and consists of four sections: verbal reasoning, biological sciences, physical sciences and a writing sample. The verbal reasoning section consists of 40 questions and lasts for 60 minutes.
  • Who Else Wants To Easily Make New Friends? - Getting into a new community might cause you a difficulty in finding new friends. You barely know anyone. You feel lonely. Should you just sit down and hope that someone to come to you, take your hand, ask you to be his/her friend? I don’t think so. You’ve got to make the move. How to? 1. Look into Yourself Decide first what kind of persons you’d prefer to be your friends. Do you want to make friends with those who have the same hobbies and interests with you, or the same gender, or the same age?
  • How To Use Perfume Samples - One of the best reasons to use perfume samples is to find out if you like the scent of the perfume and if you can wear it, before you actually buy it. Perfume does not always smell good on just anyone; each individual has many different and natural body chemistry reactions to the effects of perfume.
  • Stubborn Weight Loss? You May Have An Appetite Disorder - Nobody would argue that obesity has reached epidemic proportions in the United States--one look around confirms that. Unfortunately, many people try to lose weight--and when it doesn't work, they think they've failed. In addition to the resulting physical and health issues, repeated diet failures take a heavy emotional toll, leaving many feeling weak, guilty, ashamed and humiliated. But it's not their fault! When diets fail, we usually blame the person for a lack of self-control, but the reality is, their body chemistry has gone awry. Science has proven our brains and body chemistry control our appetite.
  • Fighting The War On Free Radicals - Broadly speaking, the word antioxidant is used to mean a substance which helps to control oxidation rate in a reaction. This is an important phenomenon from the point of view of both chemistry as well as biology.
  • Things To Know About Foot Doctor - When you are suffering from a foot ailment you need medical help, however even if you go to your doctor for treatment, they will be unable to treat your foot problems. This is because normal doctors do not have the necessary training for dealing with foot problems and disease. The type of doctor that you will need to consult is that of a foot doctor or more correctly a podiatrist. Foot doctors are professionals that specialize in the medical treatment and care of the foot, ankle and the lower leg.
  • What Are GRE Tests And Who Takes Them - These tests are meant to gauge undergraduate achievement in the following eight disciplines. Biochemistry, Molecular and cell biology, chemistry, literature in English, physics, biology, computer science, mathematics and psychology. Each of these Graduate Record Exam tests is meant for students who have either majored in or have a great deal of background in that particular area. Who Takes Them and Why: Those graduate applicants who expect to graduate from an accredited college are able to take the GRE tests. These test scores are then used by the admissions department or fellowship panels to supplement a student's undergraduate records and any other qualifications that are necessary for graduate study.
  • How To Get Into Pharmacy School - Becoming a pharmacist is a solid career choice. Demand for pharmacists currently outstrips supply. This is due to a combination of factors which aren't likely to decrease in the future. The population needs more prescriptions, and as we live longer we demand more medicines. In addition the administrative burden on pharmacists (mainly third-party payments for prescriptions) is increasing.
  • Clathrate caged compounds in crystal lattice structures - The stable electronic configuration of the noble gases probably restricted the attempts to prepare chemical compounds of the elements. Every attempt to prepare inert gas compounds of the usual types by treatment with oxidizing or reducing agents has met with failure. But inspite of unfavourable conditions, some compounds formation has been reported. The only compounds known before 1962 were the hydrates and clathrates. In such compounds, the noble gas atoms (guest) are caged in cavities in the crystal lattice of other compounds (host) whose molecules are joined together by hydrogen bond e.g. quinol (1,4-dihydroxybenzene). Quinol forms clathrates with argon, krypton and xenon when crystallized in the presence of these gases from benzene or water under pressure of 10-40 atmospheres. X-ray studies show that three quinol molecules form a somewhat spherical cage of about 4Å diameter.
  • Less Common Aspects Of Forensic Work - In previous articles we explored some of the most commonly known areas in which forensic experts carry out their daily duties. Among these, we mentioned forensic anthropology, forensic pathology, forensic dentistry, forensic nursing and forensic chemistry or toxicology. Forensic Science, however, is a very broad field of study and involve many other disciplines that on a daily basis contribute to solve crimes. Let us now take a brief survey of other, less known aspects of Forensic Science. Forensic Entomology: Even though mostly disregarded (at best), insects can result highly informative and even critical for certain forensic investigations.
  • Recurring Yeast Infections and Alcoholic Beverages - When fighting recurring yeast infections, your diet and lifestyle are important tools. Knowledge is also important and knowing what your candida triggers are can help you manage this problem in your life. There are candida foods to avoid and foods that you can and should eat that will help you or that will hurt your efforts. Yeast infections thrive on yeast foods and on sugar and certain foods and beverages can work either for you or against you in your quest to normalize your body’s chemistry. We all have a certain amount of yeast in our body.
  • University of Florida - Doctor of Pharmacy Degree - Pharmacy has always been a sought after course for students who are interested in the pharmaceutical industry. Sometimes, the pharmacy course is taken as a second choice if students fail to qualify for medicine. Whatever be the reason the course has always been invaluable and will always continue to be so.
  • How to Find a Holistic Chiropractor - Why would I want to use a holistic chiropractor? A holistic chiropractor has a more comprehensive approach to your care. A traditional chiropractor treats only the structural component. As a holistic chiropractor, I also address emotions that may be creating disease or dysfunction and nutritional imbalances that disrupt the body's chemistry. What do emotions and body chemistry have to do with wellness? Your body operates on a model called the Triad of Health.
  • Piggy Banking For Adults - We learn many things as the years move on. Some of these lessons are learnt in Chemistry class. Others are discovered during the course of the exams. Yet other lessons are learnt outside our classrooms. We learn to be less impetuous and much more alert. We learn to work harder and be more optimistic. We learn the importance of being earnest. We understand the need to be honest and to be a person of integrity. There are many lessons that we learn.
  • Serotonin and Dopamine Neurotransmitter Balance - Neurotransmitters create and reflect your feelings, moods, thoughts, and behaviors. This powerful group of chemicals in the brain is responsible for physiological and psychological changes in how you experience your life. All behavior has a corresponding chemical pattern in the brain. There are more than a dozen neurotransmitters. Two of them - serotonin and dopamine - play a crucial role in orchestrating your behaviors, thoughts, emotions, and experiences and are commonly out of balance. Serotonin Serotonin is considered the feel good, inner peace, well-being neurotransmitter. Optimal serotonin levels are required for all positive affective states and all balanced emotional conditions. It's unlikely that your serotonin levels would be too high. When your serotonin levels are low however, you may lapse into a cycle of struggle and hopelessness. Here are ten signs that you serotonin levels are too low: 1. You become reclusive and avoid situations that make you anxious.
  • Widower Dating - The thought of dating again after losing a loved one is very difficult and sometimes it can take a person several years before they can even consider it. The thought of dating again is hard because there are a lot of emotions involved and it may take many years before a person can recover enough from the loss of their loved one to go out on one date. Before they do, they think they must heal completely emotionally.
  • Who Makes The First Move? - If you’ve been in the dating scene for some time, you’ve probably felt attracted to certain men in places such as bars, cafes, and restaurants. This is normal – after all, these places are typically where well-dressed, well-mannered men hang out. It’s impossible not to be attracted to at least some of the men who spend their spare time here. But have you ever shared an attraction with a man in the scene?
  • Glyconutrients And Their Benefits On The Body - The health benefits of glyconutrients have been known for over ten years now, though there was a time that doctors scoffed at the idea that sugars could benefit your health. However, there was also a time when doctors scoffed at the idea that any nutritional supplement was beneficial to you. They have since been proved wrong, and nutritional supplements of all kinds are not only widely used but most of the common ones have been scientifically proved to be effective. Glyconutrients are the newest of these to have been found effective. There are 8 glyconutrients that are essential components of your body’s defenses against disease.
  • What Is It In Bad Boys That Make Them Seem So Good? - What makes good guys different from bad boys? Naturally, good guys have all the “good” qualities that women look for in a man – gentlemanly, well-mannered, and generally a pleasure to have around. Bad boys, on the other hand, are annoying, cocky, or obnoxious – someone any level-headed woman would never think of dating. Now, suppose you’re hooked up with a good guy in your life. He’s really good boyfriend material – he may even be showing qualities that could make him husband material. They lavish you with attention and love. Then, out of the corner of your eye, you meet this bad boy. He’s sloppy, he’s arrogant, insensitive and mean in different levels. But most of all, he holds your attention.
  • Messages in Water: Emoto's Findings - There are many ways to look at water. It is a chemical compound of Hydrogen and Oxygen (even most people who flunked, or never took chemistry probably know the symbol for water is H2O);
  • What General Anxiety Disorder - Gad? - General Anxiety Disorder or GAD as it is known is another type of anxiety disorder. It affects roughly 4 - 5 million people of the American population alone. If you suffer from General Anxiety Disorder symptoms can include but are not limited to those also suffered by panic disorder victims. It has also been found that General Anxiety Disorder affects women proportionally more that it does men. General Anxiety Disorder symptoms are many and vary from person to person.
  • It’s In The “delivery.” The Hebrew University Of Jerusalem Leads In Drug Delivery - World-renowned researchers, world-class facilities, and the close cooperation with Israel’s leading pharmaceutical companies and hospitals give the Hebrew University of Jerusalem, the Technology Transfer University, an edge in the development of innovative drug delivery solutions. Novel drug delivery solutions come about as the result of research into many different Technology Transfer Services areas and fields, including liposomes, polymers, controlled release and encapsulation technologies, and microparticulate and nanoparticulate targeting systems. At the Hebrew University, research into groundbreaking drug delivery systems is underway by some of the world’s acknowledged experts in a number of different fields.
  • Coach Success: Look At Tiger Woods - Most people would agree that Tiger Woods is the best golfer in the world. Whether you follow golf or not, there is an important aspect to Tiger Wood's success that often gets overlooked. He has at any one time three or four coaches. Even with all his natural ability Tiger Woods understands that coaching, being held accountable by others, not only accelerates the process of his successful performance but creates a winning performance strategy.
  • Fish Oil and Bipolar - With the ups and downs that are associated with bipolar disorder (sometimes referenced as manic depressive disorder in more recent times), it's understandable that the patient might want to find a medication that can help...
  • The Secrets of Natural Face Cream - Skin care is an everyday part of our lives. Having healthy, good looking, skin is essential to our general well-being and self-confidence. However there are so many products out there that it can often be hard to find a beneficial, healthy and well priced skin care facial cream. The problem lies partly in the fact that skin care products are so heavily marketed that it is often impossible to tell fact from fiction.
  • How Pharmacies Have Evolved Over Time - Pharmacy is derived from the Greek word for drug and is the link between the health and chemistry sciences. Its job is to ensure the safe and effective use of prescribed medications. The scope of pharmacy practice also includes the more traditional roles of creating and dispensing the aforementioned medications but it also includes the more modern services related to hospital and out-patient care including clinical services, checking medications for quality, safety, efficacy and providing pertinent drug information. The experts on these various drug therapies, as well as being the primary health professionals who set up medication use, provide patients the best usage information and are called Pharmacists.
  • The Role Of Weather On Horse Racing Tips - When racing tipsters make their predictions, they have to consider factors like the horse's health, age, and performances on past races. Also, the tipster has to study weather conditions, race track conditions, and jockey-horse chemistry to make a relatively accurate guess or prediction on which horse will finish first. Most of these salient factors are too scientific and complicated for regular punters. But you can easily learn how to observe the weather and see how it affects how horses run in a certain race.
  • High Fiber Foods: Your Ticket To A Slim Waistline - Odds are, you are looking for the secret of successful slimming. Like most Americans, you’re concerned about your expanding waistline, tummy or cellulite. You’ve tried everything from diet pills to cabbage soup and nothing is working. While most experts agree that the time-tested way of losing excess pounds is through a healthy diet, balanced caloric intake and sensible exercise, many of us are unsure how to begin. And, while healthy exercise is possible without a gym membership, healthy food choices are more difficult to make, and few of us can honestly say we know how to properly create a menu plan for weight loss. In her latest book, The Fiber35 Diet, New York Times best selling author Brenda Watson shares that with just a few simple changes, you can achieve vibrant health, optimal weight, and wellness for life. What is her secret?
  • Causes Of Anxiety Attacks - Anxiety attacks can be caused a multitude of things including stressors, financial problems, relationship problems, bereavement, medical conditions and medication. However, as with any medical condition, there is usually more than one cause, some of which can be interrelated. When a doctor is trying to determine the causes of a patient’s anxiety attacks, he will assess environmental issues, traits in the person’s personality, the patient’s brain chemistry, any past traumas and the family medical history.
  • Quit Smoking With Some Pricking - Almost everyone of us knows that smoking causes cancer, emphysema, and heart disease. Excessive tobacco use can actually shorten a person's life by 10 years or more. Based on records, this pernicious habit can cost a smoker thousands of dollars every year. So how come a lot of people find it difficult to quit smoking? The answer, in a word, is addiction.
  • Does Ralph Lauren Wear His Own Perfume? - I bet the odds are that Ralph Lauren does not wear anything from his own range of fragrances. Why? Some scents are more suitable for women than they are for men. Menthol, saddle leather and cigar smoke are usually smells associated with masculinity. Did you ever try your Dad’s aftershave as a little girl? Bet it made you sick! The body chemistry between the sexes basically determines what kind of scent smells best. Some Specifics Ralph Lauren is the same name that is behind all the high priced, designer label clothes. Ralph was not content knocking out overpriced colored jeans. He needed a way to get inside women’s pant, or rather pockets, where the credit cards were hiding!
  • General Equipment Financing - There are some types of equipment that do not fall into any of the categories like agricultural equipment, automobile equipment and so on. Such equipments are categorized in the common heading General. General equipments help you improve your business or expand your business.
  • Easy and Natural Ways to Raise Your Low Serotonin Levels - Research indicates that in the United States 60-80% of the people, especially women, have low serotonin levels. Don't get caught in the low serotonin cycle of hopelessness and despair. You can alter your low serotonin levels by carefully orchestrating your foods, activities and daily routines and habits. You alter your brain chemistry, manipulate your neurochemical profile and affect your body’s physiology every day by what you do and don’t eat, what you think about, and how and where you spend your time.

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