Chemistry 101 - Introduction & Index of Topics - ThoughtCo
2019年7月10日 · Chemistry 101 - Introduction & Index of Topics. Start Learning Chemistry 101. Chemistry is the study of matter and energy and the reactions that occur between them. Westend61 / Getty Images. By. Anne Marie Helmenstine, Ph.D. Ph.D., Biomedical Sciences, University of Tennessee at Knoxville.
Learn Chemistry - A Guide to Basic Concepts - ThoughtCo
2024年7月15日 · Basics of Chemistry . Introduction to Chemistry: Learn about what chemistry is, what chemists do, and why you would want to study this science. Units & Measurements: Get a handle on the metric system and the common units used in chemistry. The Scientific Method: Scientists, including chemists, are systematic about the way they study the world.
An Introduction to Chemistry - ThoughtCo
An Introduction to Chemistry. Begin learning about matter and building blocks of life with these study guides, lab experiments, and example problems. Why Do Helium Balloons Deflate? What Is an Experiment?
What Is Biochemistry? - Introduction and Overview - ThoughtCo
2019年8月11日 · Biochemistry is used to learn about the biological processes which take place in cells and organisms. Biochemistry may be used to study the properties of biological molecules, for a variety of purposes. For example, a biochemist may study the characteristics of the keratin in hair so that shampoo may be developed that enhances curliness or ...
Introduction To Stoichiometry - ThoughtCo
2019年1月9日 · One of the most important parts of chemistry is stoichiometry. Stoichiometry is the study of the quantities of reactants and products in a chemical reaction. The word comes from the Greek words: stoicheion ("element") and metron ("measure"). Sometimes you'll see stoichiometry covered by another name: mass relations.
What Is Organic Chemistry and What Do Chemists Do? - ThoughtCo
2019年7月3日 · Organic chemistry is important because it is the study of life and all of the chemical reactions related to life. Several careers apply an understanding of organic chemistry, such as doctors, veterinarians, dentists, pharmacologists, chemical engineers, and chemists. Organic chemistry plays a part in the development of common household ...
Spectroscopy Introduction - ThoughtCo
2020年2月4日 · This is the study of substances in thin films or on surfaces. The sample is penetrated by an energy beam one or more times, and the reflected energy is analyzed. Attenuated total reflectance spectroscopy and the related technique called frustrated multiple internal reflection spectroscopy are used to analyze coatings and opaque liquids.
Why Is Studying Chemistry Important? - ThoughtCo
2019年7月3日 · Chemistry teaches useful skills. Because it is a science, learning chemistry means learning how to be objective and how to reason and solve problems. Helps you to understand current events, including news about petroleum, product recalls, pollution, the environment and technological advances.
Periodic Table Study Guide - Introduction & History - ThoughtCo
2018年4月26日 · Introduction to the Periodic Table. People have known about elements like carbon and gold since ancient time. The elements couldn't be changed using any chemical method. Each element has a unique number of protons. If you examine samples of iron and silver, you can't tell how many protons the atoms have. However, you can tell the elements apart ...
Introduction to Chemistry Quiz - ThoughtCo
2019年7月3日 · 4. Chemists use scientific notation. The number 0.00442 would be written in scientific notation as: 0.442 x 10⁻². 4.42 x 10⁻³. 442 x 10. 4.42 x 10³. You want one digit before the decimal point followed by a factor of ten. Because you move the decimal point to the right, you know the exponent is negative.