Chemistry Quiz 18 (25 MCQs)

Quiz Instructions:

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1. Which statement about noble gases is correct

2. Which property depends on the the amount of matter present?

3. A chemical change is different than a physical change because in chemical change?

4. Which blood cells fight?

5. Which of the following gas is used in cigarette lighters?

6. How many molecules are in 2.10 mol CO?

7. Which of the following is an empirical formula?

8. The two groups of substances are

9. What are the main elements found in all living things?

10. What charge do neutrons have?

11. What are the parts of an atom that carry a charge?

12. The number of electrons presents in H+ is

13. CH4 is a/an _____ compound

14. What effect do enzymes have on the rate (speed) of a reaction?

15. The maximum number of covalent formed by nitrogen is

16. What is the maximum number of electrons found in the innermost (first) shell.

17. G of beryllium (Be) contains how many moles?

18. If the atomic mass of carbon is 12, 1 mole of pure carbon would have a mass

19. The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

20. Matter are anything that

21. A substance that speeds up the rate of a chemical reaction is called

22. An atom or group of atoms that has gained or lost one or more electrons and is now either positively or negatively charged

23. In this equation, CuCl2 + NaOH $\rightarrow$ Cu(OH)2 + NaClWhich product is insoluble?

24. For people, the function of cellulose is to promote

25. Which of the following has the symbol C?