What are the 4 states of matter?
solid, liquid, gas, and plasma
How does a drop of liquid form a sphere?
the surface tension brings the molecules together at the top because of a strong attraction
In what to ways do liquids vaporize?
Evaporation- occurs at surface
Boiling- throughout liquid
Is a gas a fluid?
A Change from a solid to a liquid is a what in thermal energy? A change from a liquid to a solid involves a what in thermal energy?