A. Mercury
B. Lithium
C. Uranium
D. Strontium

A. 0
B. 1
C. 2
D. 3

A. Atomic mass and density
B. Atomic number and electron count
C. Atomic radius and formula for the volume of a sphere
D. Charge and energy levels

A. Calcium hydroxide
B. Potassium hydroxide
C. Petroleum
D. Ammonium hydroxide

A. Sulfuric acid
B. Nitric acid
C. Hydrochloric acid
D. Acetic acid

A. –192 °C
B. –269 °C
C. –310 °C
D. –196 °C

A. Carbon dioxide
B. Carbon Monoxide
C. Nitrogen oxide
D. Sulfur dioxide

A. Natural
B. Coinage
C. Hard
D. Pure

A. Ammonia
B. Nitrogen
C. Carbon dioxide
D. None of these

A. Element
B. Compound
C. Mixture
D. Electrolyte