Chemistry Quiz 48 (25 MCQs)

Quiz Instructions:

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1. Subscripts tell how many _____ of each element are in the compound.

2. Negatively charged subatomic particles.

3. Which halogenoalkane reacts fastest with sodium hydroxide?

4. Which is the following is NOT a sign of a chemical change?

5. A milk shake is a(n)

6. The 3 State of Matter are?

7. In the compound 2 H2, The "2 " means:

8. How many protons does the elemental atom of nitrogen contain?

9. Of 109 known elements, _____ are metals.

10. Which of these statements is false concerning covalent bonds?

11. When silver is being electroplated onto the cup,

12. A solid substance that forms when 2 liquid solutions are combined?

13. The study of the composition of matter and the changes that matter undergoes

14. If an unknown substance cannot be broken down into simpler substances, it is _____

15. Metals are found on the _____ side of the periodic table.

16. It is essential that the electrolyte is a liquid so that _____

17. Branch of chemistry that is concerned with the study of structure, properties, composition, and reactions of carbon-containing compounds.

18. Why ionic compounds can not conduct electricity when they are solid?

19. Chemistry is often called as _____

20. What is the percent composition of a compound that contains 40.8 g carbon and 54.4 g oxygen?

21. How many atom are in the following molecule? KCrO4

22. The atomic number tells you what?

23. How many elements are represented in the compound? Na2CO3

24. What is the symbol of Selenium

25. Which number should go in the blank? 2 Na+ _____ Cl2 $\rightarrow$ 2 NaCl