You must melt the solid with heat
Heat them.
no
All solids except sublime solids form a liquid before they turn into gas. Sublime solids directly turn to gases.
liquids turn into gas and solids don't and gas evaporates
The process of melting.
heat
There is no type of fire extinguisher that forms solids when released. They release either a gas or liquid or combination. Some liquids may turn into solids when they dry. Some gases (such as CO2) might make OTHER materials turn into solids.
heat can change many solids to liquid such as ice to water. It does this by making the molecules in the solid speed up enough so the kinetic energy is increased. This increase in kinetic energy results in the braking apart of atoms on the subatomic level resulting in the diffusion of energy and solids turning into liquids.
condensation
Yup
with some you can ex) water can turn into ice
Perfume is considered a liquid. This is one of the forms of matter.