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Chemistry Quiz 3 (25 MCQs)

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1. Solid magnesium, Mg, reacts with oxygen gas, O2, to form the solid magnesium oxide, MgO. Which equation is a balanced chemical equation for this chemical change?

2. An intensive property that refers to the appearance of quality of light reflected from the surface of a mineral.

3. How is a gas defined?

4. An example of a chemical property is _____

5. Which variable is observed or measured by the scientist during an experiment?

6. Valency of boron

7. When iron and oxygen combine to form iron oxide,

8. Name the first element of the periodic table.

9. Which statement about fats is correct?

10. Nitrogen has an atomic number of 7. How many hydrogen atoms are necessary to join with the nitrogen to form a stable compound?

11. Calculate the number of electrons in 0.1 mol Na. (Z = 11)

12. What type of bond is formed between atoms of different charges?

13. Substance present at the start of a reaction

14. The basic unit of an element is a/an _____

15. The branch of chemistry that would include testing water to determine how much lead is in it.

16. When heating solution in a boiling tube, what precaution must you take?

17. An _____ cannot be broken down into any other substance.

18. What is the measurement of matter whose value depends on the force of gravity?

19. What term describes a liquid changing to a gas?

20. What is the name of soap preparation?

21. Basic unit of matter

22. AgNO3 + Cu $\rightarrow$ Cu(NO3)2 + 2 Ag

23. Whattype of indicator, used in the science lab, will turn magenta when it iscombined with a strong base?

24. Why is transportation an issue for the textile industry?

25. Which branch of chemistry would study the heat given off when a chemical mixture called thermite burns?

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Chemistry Quiz 3 (25 MCQs)

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