Answer:
sorry this is a kind of confusing question.
Explanation:
The boiling point (or condensation point) of a substance is defined as the temperature at which the vapor pressure of the liquid is exactly equal to the external pressure. Above the boiling point, the substance exists as a gas and below, it exists predominately as a liquid.
Ca because it has a larger atomic radius.
13.) would be cytoskeleton and number 16.) would be lysosomes