Chemistry Practice Tests

These questions are written by our Science guru. Each question has five answer choices. Choose the best answer for each question.

1. CHEMICAL REACTIONS Question 1: Catalysts are everywhere! A catalytic converter is a device that converts harmful vehicle emissions into less harmful pollutants before they leave the exhaust system. Broadly, a catalyst is a substance that
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2. Question 2: Which of the following can affect the rate of a chemical reaction?
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3. STRUCTURE OF ATOMSQuestion 1: The nucleus of an atom contains the atom’s
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4. Question 2: The electrons of an atom are organized into
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5. STATES OF MATTERQuestion 1: Which of the following is characteristic of a gas?
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6. Question 2: Which state(s) of matter have a definite volume and density?
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7. NON-POLAR COVALENT CHEMICAL BONDSQuestion 1: Covalent bonds are formed when
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8. Question 2: Outermost electron shells must contain how many electrons to be complete?
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9. METALLIC BONDSQuestion 1: Which of the following is NOT characteristic of metals?
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10. Question 2: Metallic bonding is the sharing of
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11. BOND ENERGYQuestion 1: Bond energy is the amount of energy
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12. Question 2: If the bond energy for HCl is 430 kJ/mol, what is the bond energy of 4 moles of HCl
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13. IONIC BONDSQuestion 1: Which of the following tends to be true of ionic compounds?
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14. Question 2: In general, bonds between a metal and a nonmetal are
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15. NUCLEAR AND CHEMICAL REACTIONSQuestion 1: Nuclear reactions
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16. Question 2: The sun generates its heat by nuclear fusion. During this process
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17. MOLECULESQuestion 1: How are molecules charged?
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18. Question 2: Which of the following is a molecule?
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19. BASIC PROPERTIES OF GAS Question 1: Increasing the amount of gas in a fixed object will
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20. Question 2: If you decrease the temperature of a gas at constant pressure, the volume will
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21. BASICS OF ORGANIC ACIDSQuestion 1: A carboxyl group contains which of the following atoms?
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22. Question 2: CH3COOH is the chemical formula of
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23. SOLUTIONSQuestion 1: A solution is a mixture that is
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24. Question 2: Which of the following is a solution?
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Chemistry may at first seem a little overwhelming and complex, but by the time you will understand some of the basics, it won’t be long till you’ll have some fun in experimenting and get more and more understanding of the world of the chemistry.

Chemistry studies the world of Matter & Energy. Chemistry is, just as physics, a physical science and it researches and explores structures of energy and matter, and in what way these two are interacting. The fundamental building blocks of all matter are atoms. These atoms are joining together and by doing so they form molecules. Chemistry studies how, and to what extend, atoms and molecules may interact again to form, via chemical reactions, new and possibly innovative, products.

Chemistry is used and applied in numerous fields. You can see chemistry in all sorts of science and medicine, and the field of chemistry is studied by biologists, engineers, and physicists. Chemistry is all around us and plays an important role in all study curricula of pharmacists, dentists, doctors, physical therapists, veterinarians, and nurses. Chemistry plays also an important role in (the development of) appliances and everyday goods and food. Fire fighters need to know about chemistry, and so do chefs, plumbers, truck drivers, hairdressers, chefs, and so on.

Often, chemists are working in labs, or in some other research setting, experimenting with chemical elements, testing hypotheses, or asking questions regarding their scientific work. Some other chemists may be working on computer-based development theories, or study scientific models that are often set up to predict chemical reactions. We can also see chemists that are active in field work, and some others again teach or are employed in the insurance world. So you see, if you are interested in chemistry, your career options are pretty extensive.