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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?

yes

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?

a.increase
b.decrease

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