1. Homework and Review Questions
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Homework and Review Questions

2. Question 1
Examine the contents of the vials and their labels. Write down at least six patterns you notice. Example: Every substance with the word sodium on it also has the symbol Na.

3. Question #2 Which elements have the following symbols- A) Na B) O
C) Cu D) Zn
E) S F) C
G) N H) H

4. Question 3
How would you translate the following words into chemical symbols?
Sulfate
Nitrate
Hydroxide

5. Question 4
What do you think g, l, and s in parentheses stand for?

6. Question 5
How would you write the chemical formula for ice?

7. Question 6
What do all the substances labeled (aq) have in common?

8. Question 7
Imagine you find a vial in the chemistry stockroom that is labeled Cu2SO4 (aq). What would you expect to see inside the vial?

9. Question 8
Potassium iodide, KI (aq), is added to lead nitrate, Pb(NO3)2 (aq), resulting in KNO3 (aq) and a yellow solid. Identify the yellow solid from the list below. Explain your thinking. a. PbI2(aq) b. PbI2 (s) c. Pb(NO3)2 (s) d. KI(s)

10. Question 9 CaCl2 (s) is an example of an aqueous solution
(B) an element
(C) a metal
(D) a compound

11. Question 10
In a solution of silver nitrate, Ag (NO3)2 (aq) , water is the
solute
(B) solvent
(C) solution
(D) element

12. Question 11
The correct way to represent a solution of copper nitrate is
Cu (s)
(B) Cu (aq)
(C) Cu(NO3)2 (s)
(D) Cu(NO3)2 (aq)

13. Question 12
Suppose you pour nitric acid on some copper powder in a test tube. A brown gas is produced, and some light blue liquid is left in the test tube. There is no solid remaining. What happened to the copper? (A) It escaped in the brown gas. (B) It was destroyed by the acid. (C) It is now in the light blue liquid in compound form. (D) It is now in the light blue liquid as an element.

14. Question 13 The symbol (s) stands for solid (B) aqueous (C) solution
(D)gas

15. Question 14
If you saw a container of NaCl (aq) in a lab, what would you see?
solid
(B) liquid
(C) gas
(D) nothing

16. Question 15
If you saw a container of NaCl (s) in a lab, what would you see?
solid
(B) liquid
(C) gas
(D) solution

17. Question 16
How many elements are represented by the chemical formula for sodium nitrate, NaNO3?
Name them

18. Question 17
What is the difference between CuSO4 (s) and CuSO4 (aq) ?

19. Question 18
If salt NaCl (s) is dissolved in water, Hs0 (l), how would you write the chemical formula for the resulting salt water solution?

20. Question 19
What is the solvent and what is the solute in a salt-water solution?