Unit 3 Chem A Review

A block has a mass of 54g and a volume of 20cm3.  What is the density of the block?

• 74 g/cm3
• 1080 g/cm3
• 34 g/cm3
• 2.7 g/cm3

A diamond has a mass of 1.2 g.  If diamond has a density of 3.51 g/mL, what is the volume of the diamond.

• 0.34 mL
• 2.9 g/mL
• 2.3 mL
• 4.2 mL

Calculate 12.34 + 1.234 + 0.1234

• 13.6974
• 13.697
• 13.70
• 13.7

The dimensions of rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as

• 4.128 cm³.

• 4.12 cm³.

• 4.13 cm³.

• 4.1 cm³.

Convert 300 cm to m:

• 3 m
• 30 m
• 0.3 m
• 0.03 m

490,000 g =____ kg

• 490
• 49
• 4,900
• 0.49

How many gallons are in a pool that holds 758,000 Liters?
(1 gallon = 3.79 Liters)

• 200
• 20,000
• 200,000
• 2,000,000

How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams; 1 kg = 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg

What is the atomic number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons in the energy levels

What is the mass number?

• the number of protons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of neutrons in the nucleus

• the number of protons and electrons in the atom