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chemistry tagged articles (0-50 of 436)

  • 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. It prepares a student to participate the AP Chemistry exam towards the end of the academic year. The course includes study of topics like atomic theory, phases of matter, chemical bonding, solutions, types of reactions, equilibrium, reactions kinetics, and also thermodynamics. The course is designed keeping in mind the equivalency of general chemistry course which is usually taken during the first college year.
  • 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.
  • 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.
  • 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. Like dimethyl ether and ethyl alcohol have same molecular formula, but their properties are quite different. Such compounds are called as isomers and the phenomenon is referred as isomerism. Isomerism may thus be defined as the phenomenon by virtue of which different organic compounds can be represented by same molecular formula. Isomerism can broadly be classified into two categories, namely; Structural isomerism and Stereoisomerism. In structural isomerism, the isomers differ from one another in their structural arrangement.
  • 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.
  • 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.
  • 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). Pure water is a bad conductor of electricity due to very low degree of ionization. Maximum density of water is at 4ºC. Ice floats on water because density is less than that of water which in turn is due to the empty space in its crystal structure. Crystal structure of ice is regular hexagon with empty space at the centre. Water is one of the most important compounds of hydrogen. It is colourless liquid and possesses a high dielectric constant (81) and therefore, salts are highly ionized when dissolved in water, but not so in other solvents.
  • 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.

  • 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. All behavior has a corresponding chemical pattern in the brain. Your behaviors and your experience affect your biochemical profile and your biochemical profile affects your behaviors and your experience.
  • 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.
  • 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.
  • 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).
  • 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. Although, some people cannot tolerate wearing or being around perfume, there are even more who do enjoy wearing and smelling perfumes, whether they buy from a high-end store or purchased online at a discount or wholesale perfume business.
  • 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. Certain eating patterns can alter those chemicals and create an unconscious, internal process that may even lead to a hidden addiction to food.
  • 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.
  • 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).
  • 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. As a matter of fact we have all sorts of different types of microorganisms swimming inside us and some of them have very important roles.
  • 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.
  • 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.
  • 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. Getting over the death of a loved one will often require long term counseling. The thought of dating someone else will be a very sad thought and much too painful to consider replacing them with someone else.
  • 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 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? By shared, I mean you have the same attraction you’ve felt for other men towards him – but, at the same time, he’s giving clues that he thinks you’re not bad, yourself.
  • 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.
  • 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. His coaches include one for his swing, one for fitness and his caddy for guidance on the course.
  • 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 to keep things more level. Instead of having the extreme highs and lows, the patient can manage their disorder and live a healthy and normal life. In recent years, the idea of additional medications and natural remedies to handle this diagnosis has been discussed - with surprising answers.
  • 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 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. Watch Horses Run In The Rain A soggy horse track is a good way to observe how horses perform when it rains during a race. You see, some horses seem to run better on wet tracks while others do not.
  • 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.
  • 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. Once a person starts smoking, it's going to be a very hard habit to break.
  • 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?
  • 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). In all such cases the atoms and molecules combine in definite ratios in terms of number and in terms of their amounts.
  • 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. In biology the group of organic substances consisting of vitamins A, C & E fall under this category apart from several other substances. Inside the living cells there is a presence of free radicals which are the byproducts of various natural biological processes. These free radicals consist of oxygen molecules which have the affinity to become oxidized. This oxidation process can lead to the development of cancer in those cells.
  • 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.
  • 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. So how do you take that first step on the ladder to becoming a pharmacist Getting into Pharmacy School. You should apply early to pharmacy schools as soon as you can, let them know you're eager, eager to study at their school. Pharmacy schools are inundated with applications so get yours in early whilst the admissions staff are still fresh and you have a better chance of making it.
  • 5 Things You’ll Learn In Culinary School - Many people consider attending a culinary school, either because they want to pursue a culinary career or because they just want to learn to cook for their own enjoyment. Sometimes, though, people can be skeptical about whether a specialized culinary education, or even a few cooking classes, is really necessary. If you are among the latter group, here is a list of five important things you will learn in culinary school. Basic Nutrition: Nutrition is about more than what the label on the back of a package tells you. In fact, food labels can be appallingly misleading.
  • Stoichiometry (From The Greek For Element And Measure) - In chemical equations the chemical reactions of the measurable relation of products to reactants is referred to as reaction stoichiometry. The law of conservation of mass, the law of definite proportions and the law of multiple proportions support stoichiometry in the definite ratios of chemicals combined in reactions. The quantity of an element on one side of the equation must be the same as the other side. Chemical reactions do not allow for gain or loss of mass, nor the transmutation of one element into another. The quantity of the elements must remain constant throughout the entire reaction.
  • 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. Let us check out some of the broader aspects of the Doctor of Pharmacy Degree.
  • Will Stress Take You Down? - Why does stress overwhelm some people while others come through it just fine?
  • Liquid Multivitamins And Their Benefits On Health - Vitamins are known to be really powerful organic compounds available in little concentrations in different food sources. Vitamins are supported to function in certain specific ways and their role is vital for the body chemistry. Multivitamins can be referred to as a combination of several vitamins and minerals. These are also available in the form of liquids, capsules, tablets and injections. These multi-vitamins play an important role in treating mineral and vitamin deficiency in the body. The deficiency may occur due to pregnancy, poor nutrition, frequent illnesses and reduced absorption of food items via stomach and several other conditions.
  • The Perfume Atomizer: From Classic Collectible To Modern Convenience - Perfume atomizers have always been an odd mix of elegance and chemistry lab utilitarianism. The graceful scent bottles of old were produced in a variety of shapes and sizes and a variety of materials including m crystal, cut glass, porcelain and enamel, with delicate filigree, or gold, silver, and jewel accents, paired with Bunsen burner-like tops connected to small rubber turkey baster-like rubber bulbs. When the bulbs were squeezed, they sent a fine mist of perfume through the nozzle of the Bunsen burner-like top.
  • The World is Flat & Toxic FDA Drugs Will Bring Us Good Health - They All Say it's True/Must Be. - What If Everyone Thought The World Was Flat,...& They Laughed At Your "Christopher Columbus" Idea,... What If Nearly Every Illness of Humanity was self-inflicted & there was scientific evidence verifying that you won't fall off the Earth if you travel toward the horizon? As a child, when I got sick, my parents would take me to the doctor. That made sense then and it still does (at least in part) today. Because the U.S. is ranked #1 by the World Health Organization in trauma care.
  • Water Cars - Why Should You Opt For Water Powered Cars - On the first look it sounds like another James Bond Movie where his car will be running on water.
  • 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); it is the most pervasive substance on the planet and in our bodies; it is an element in both Western and Eastern schools of alchemy and astrology; next to air, it's the most essential thing our bodies require to survive.

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