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Chemistry Quiz 47 (25 MCQs)

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1. Atoms of the same element that differ in mass.
2. What is the removal of oxygen from a substance called?
3. In organic chemistry, the C element normally bonded with the following atoms, EXCEPT:
4. The study of the transfer of energy, mechanisms or rate of a chemical reaction.
5. _____ refers to the way a metal can be hammered or rolled into thin sheets.
6. A material that will conduct electricity and heat is _____
7. What subatomic particles are found in energy levels outside of the nucleus and have a negative charge?
8. The building blocks of _____ are nucleotides.
9. The function of antioxidants is to
10. Calculate the number of gold atoms in a 4 mole sample of gold.
11. Which branch of Chemistry would study rubbing alcohol (C3H8O) and its reactions?
12. With unbalanced forces, the object will move in the direction of the _____ force.
13. Substances formed by chemical reaction are called the
14. The branch of chemistry that would study and develop new materials that in general do not contain carbon is _____
15. _____ chemistry is directed to a practical goal or application.
16. Whichone of the following equations is correctly balanced?
17. When animals and plants die, bacteria release nitrogen from their dead bodies in the form of.
18. Acetylene is burned in welding torches according to the following chemical reaction:2 C2H2 + 5 O2 $\rightarrow$ 4 C02 + 2 H2OHow many oxygen (O) molecules are involved in the reaction?
19. How many atoms is in this formula? NaFBr2
20. Which of the following are USES of chemistry, but not BRANCHES of chemistry?
21. _____ are pure substances made of one type of atom.
22. Bonds between atoms in a molecule form as a result of the sharing or exchanging of _____ electrons.
23. What was the first synthetic organic insecticide
24. Quantity of carbon dioxide produced by reaction of 48g of Carbon and 1 mol of dioxygen is _____
25. A measure of how much matter an object has is _____
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