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​As heat is added, what happens to the atoms in a solid?
They begin to vibrate rapidly
They begin to contract.
They begin to expand.
They begin to slow down
​ A substance is able to flow freely within a container. What state of matter is the substance in?
Gas
Plasma
Solid
Liquid
As heat is added, what happens to the atoms in a solid?
 A substance is able to flow freely within a container. What state of matter is the substance in?
 What are the characteristics of a solid?
How are solids and liquids similar?
When heat is added to a liquid, what occurs?
When heat energy and temperature are at their lowest, what state of matter is a substance in?
When heat is added to a liquid, what occurs?
According to the phase change diagram, what happens as temperature and heat energy increase?
Why do atoms in a solid still vibrate?
 What do the small particles protons, neutrons, and electrons compose?
