Chemistry Quiz 6 (25 MCQs)

Quiz Instructions:

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1. You are about to open a bottle of Italian dressing but notice it says shake before using, the dressing is most likely a _____

2. Where electrons are likely to be found as they travel around the nucleus

3. _____ ft = 15.0 m

4. A characteristic of matter that you can observe or measure without changing the identity of the matter

5. Proton number of Silicon is 14. In which group does Silicon belongs to in Periodic Table of Elements?

6. What is a chemical bond that involves sharing electron pairs between atoms? *Hint:SHARES VALENCE ELECTRONS

7. _____ occurs when two or more molecules interact forming new molecules.

8. Which gas is used in fire extinguishers?

9. Which of the following is a heterogeneous mixture?

10. NaBr + 1 Ca(OH)2 $\rightarrow$ 1 CaBr2 + 2 NaOH

11. Name the compound NH4OH

12. Which answer best describes two or more elements chemically combined in specific proportions?

13. What property of water causes water molecules to attract to the sides of a graduated cylinder?

14. A rule that states that 2 or more particles can't occupy at the same state at the same time.

15. What is the formula for iron(III) oxide?

16. RbNO3 + BeF2 $\rightarrow$ Be(NO3)2 + 2 RbF

17. This rule states that the energy cannot be gained or lost in a chemical reaction _____

18. Which of the following is a noble gas? Hint:It is stable and the valence shell is full.

19. How many oxygen (0) atoms are in Al(NO3)3?

20. Which of the following CANNOT react as a nucleophile?

21. For the lat _____ years chemistry has been essential to the development of mankind.

22. What do all elements in the same period have?

23. In the 1980s what was the paradigm shift?

24. What is the symbol of Boran

25. All changes in the state of matter of a substance requires