1. Which of the following are classified as a pure substance?
A. A pile of table salt
B. A canister full of oxygen gas
C. A pitcher of sweet tea
D. A fish tank full of wet sand

2. A. Mass B. Specific heat capacity C. Heat capacity D. Density
Which of the following are extensive properties of matter?
A. Mass
B. Specific heat capacity
C. Heat capacity
D. Density

3. Answer the following equation to the correct number of significant figures:– A B C
D. 395

4. Solve the following to the correct number of significant figures:
1.4x10^3 x ( – 6.32)
A. 1.1x10^4
B. 11,000
C. 10,816.4
D. 1.08x10^4

5. Identify the subatomic particle that is described correctly
A. Electrons have a charge of 1
B. Proton number can change, create isotopes of an element
C. The number of neutrons determines the ionic charge
D. The neutron has a mass of 1 amu

6. What is the importance of the atomic number?
A. It is the molar mass of an element
B. It equals the number of neutrons in an element
C. It determines the element
D. It changes between isotopes of the same element

7. Identify the particle below: 17 35 𝑋 𝑥 −2
17 35 𝑋 𝑥 −2
A. An ionic isotope of Bromine with 17 neutrons and -2 charge
B. A bromine ion with 17 protons and 19 electrons
C. A chlorine ion with 17 neutrons and -2 charge
D. A chlorine ion with 18 neutrons and 19 electrons

8. Match each periodic group to its ionic trend
Alkali earth metals
Halogens
Noble Gases
Alkali Metals
A. +1, -1, 0, +2
B. +2, -1, 0, +1
C. +2, -2, -1, +1
D. +2, -1, -2, +1

9. Calculate the number of chlorine atoms in 5.55 moles of 𝐶 𝐶𝑙 4
A. 1.34x10^25
B. 3.34x10^24 C D

10. Name the ionic compound below:
𝐹𝑒 𝐶𝑙 2
Iron(II) chloride
B. Iron(II) dichloride
C. Iron chloride
D. Monoiron(II) dichloride

11. Write the formula for the ionic compound formed from the ions below, then name it.
A. 𝐻𝑆 𝑂 3 Hydrosulfuric acid
B. 𝐻 2 𝑆 𝑂 3 Hydrosulfurous acid
C. 𝐻 2 𝑆 𝑂 3 Sulfurous acid
D. 𝐻𝑆 𝑂 3 Sulfurous acid

12. Name the compound below:
𝐶 𝐹 4
A. Carbon flourite
B. Carbon(IV) flourite
C. Monocarbon tetraflourite
D. Carbon tetraflourite

13. Determine the molecular formula of a compound composed of 63
Determine the molecular formula of a compound composed of 63.15% Carbon, 5.30% H, and 31.33% Oxygen by mass. The molar mass of the compound is g/mol
A. 𝐶 3 𝐻 3 𝑂
B. 𝐶 16 𝐻 16 𝑂 6
C. 𝐶 8 𝐻 8 𝑂 3
D. 𝐶 6 𝐻 6 𝑂 2

14. When the following equation is balanced, how many molecules of oxygen gas will be present in the reaction?
𝐶 12 𝐻 12 𝑂 6 + 𝑂 2 →𝐶 𝑂 2 + 𝐻 2 𝑂
A. 15
B. 12
C. 9
D. 7

15. 𝑁 𝐻 4 𝑁 𝑂 3 +𝑁𝑎𝑂𝐻 → 𝐻 2 𝑂+𝑁 𝐻 3 +𝑁𝑎𝑁 𝑂 3
If 50.0 grams each of ammonium nitrate and sodium hydroxide react, and 9.75g water is produced, what is the percent yield of the reaction?
A %
B %
C %
D. 42.0%

16. 𝐶 𝑆 2 + 𝐶𝑙 2 →𝐶 𝐶𝑙 4 + 𝑆 2 𝐶𝑙 2
Balance the equation. If grams of carbon disulfide and grams of chlorine gas react to yield 85.0 grams of carbon tetrachloride, what is the percent yield of the reaction?
A %
B %
C %
D %

17. 16.5 grams of NaCl is dissolved in enough water to form 225mL of solution. What is the molarity of the NaCl solution?
A. 1.25M
B M
C M
D M

18. 225mL of a solution of unknown concentration is diluted with water to yield 400mL of 1.25M solution. What is the molarity of the initial solution?
A. 3.75M
B M
C M
D M

19. 𝐻 3 𝑃 𝑂 4 +3𝑁𝑎𝑂𝐻 → 𝑁𝑎 3 𝑃 𝑂 4 +3 𝐻 2 𝑂
What volume of 0.20M 𝐻 3 𝑃 𝑂 4 is required to completely react with 100mL of 0.10M 𝑁𝑎𝑂𝐻?
A mL
B. 50.0mL
C mL
D mL

20. 𝐻𝐶𝑙+𝑁𝑎𝑂𝐻 → 𝐻 2 𝑂+𝑁𝑎𝐶𝑙
12.5mL of 0.30M HCl solution was needed to neutralize 285mL of an NaOH solution. What is the concentration of the NaOH solution?
A M
B M
C M
D M

21. In the reaction of calcium bromide and lithium carbonate, predict the compound that will precipitate.
A. Lithium bromide
B. Calcium carbonate
C. Lithium calcinate
D. Calcium lithide

22. Li𝐶 𝑂 3 𝑎𝑞 +𝐶𝑎𝐵𝑟 𝑎𝑞 →𝐶𝑎𝐶 𝑂 3 𝑠 +𝐿𝑖𝐵𝑟 𝑎𝑞 Write the net ionic equation.
𝐿𝑖 + 𝑎𝑞 + 𝐶 𝑂 3 2− 𝑎𝑞 + 𝐶𝑎 2+ 𝑎𝑞 + 𝐵𝑟 − 𝑎𝑞 → 𝐶𝑎𝐶 𝑂 3 𝑠 + 𝐿𝑖 + 𝑎𝑞 + 𝐵𝑟 − 𝑎𝑞
B. 𝐿𝑖 + 𝑎𝑞 + 𝐵𝑟 − 𝑎𝑞 →𝐿𝑖𝐵𝑟(𝑎𝑞)
C. 𝐶𝑎𝐶 𝑂 3 𝑎𝑞 →𝐶𝑎𝐶 𝑂 3 (𝑠)
D. 𝐶𝑎 2+ (𝑎𝑞)+𝐶 𝑂 3 2− (𝑎𝑞) →𝐶𝑎𝐶 𝑂 3 𝑠

23. True or False: The reaction of hydrobromic acid and potassium hydroxide has the following neutralization reaction.
𝐻𝐵𝑟 𝑎𝑞 +𝐾𝑂𝐻 → 𝐻 2 𝑂(𝑙)+𝐾𝐹(𝑎𝑞)
A. True
B. False