2-Action Chemistry Final Exam 2025 ---FORM C

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First Name

1. Which best describes the current atomic theory?

• a. Atoms are composed of electrons in a cloud around a positive nucleus.
• b. Atoms can easily be split, at which time they become radioactive.
• c. Atoms live in Mario's castle

2. How many protons does chlorine (Cl) have?

• a. 35
• b. 17
• c. 520

3. In a neutral atom, the number of protons equals the number of ____________.

• a. neutrons
• b. electrons
• c. ducks in Mr. P's room

4. What is the name of the compound LiF? (Ionic)

• a. lithium fluoride
• b. Chlorine Bleach
• c. monolithium fluorine

5. What is the chemical formula for calcium nitrate? *Crisscross* nitrate(NO3)-1

• b. Ca2(NO2)2
• c. Ca(NO3)2

6. What is the correct formula for dinitrogen pentoxide?

• a. N4O
• b. KO2
• c. N2O5

7. A block has a volume of 1.95cm3 and a mass of 12.0 grams. What is the density of the wood?

• a. 6.15 g/cm3
• b. 400 k/cm3
• c. 0.10 g/cm3

8. Which elements would most likely bond to form a covalent bond?

• a. K and C
• b. Ba and Cl
• c. P and O