Semester 1 Review

Front

What type of reaction releases energy in the form of heat?

Back

Exothermic reaction.

Front

What is the order of density of liquids if a clear liquid is on top of a green liquid, and the green liquid is on top of a black liquid?

Back

Black > Green > Clear.

Front

What is the benefit of using molecular model kits to model water?

Back

They provide information about the ways atoms are arranged.

Front

If Cup A contains 1 gram of salt in 100mL of water and Cup B contains 5 grams of salt in 100mL of water, which solution is more dilute?

Back

Solution A is more dilute than B.

Front

In which stage of the water cycle are contaminants naturally removed?

Back

Evaporation.

Front

What is the definition of an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

What does it mean for a solution to be saturated?

Back

A saturated solution contains the maximum amount of solute that can dissolve at a given temperature.

Front

What is the process of water vapor turning into liquid water called?

Back

Condensation.

Front

What is the main component of a water molecule?

Back

Two hydrogen atoms and one oxygen atom (H2O).