Science Quiz Bee Reviewer G8

Which of the following is a diatomic molecule?

• NaCl

• H2O

• O2

• NH3

What is the name of the process by which a solid turns directly into a gas?

• Condensation

• Evaporation

• Sublimation

• Deposition

What type of mixture is milk?

• Solution

• Suspension

• Colloid

• Compound

Which of the following is a strong acid?

• Acetic acid

• Citric acid

• Hydrochloric acid

• Carbonic acid

What is the chemical formula for rust?

(a)  

Which gas is used in balloons because it is lighter than air?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

What is the molar mass of carbon dioxide (CO2)?

• 28 g/mol

• 32 g/mol

• 44 g/mol

• 48 g/mol

Which of the following is a polymer?

• Glucose

• Fructose

• Starch

• Sucrose

• 4

• 6

• 10

• 14

What volume of 2.0 M HCl is needed to neutralize 25.0 mL of 1.0 M NaOH?

• 10.0 mL

• 12.5 mL

• 25.0 mL

• 50.0 mL