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These words go with the Science Court "Particles in Motion."

particles

tiny pieces of matter

atoms

the smallest particles of an element

molecules

2 or more atoms that are tightly joined together

element

a substance that is made up of only one type of atom

matter

anything that has mass and takes up space

expand

to grow in size, amount, or volume; to get bigger

contract

to shrink down in size; to get smaller

thermostat

a device that works by reacting to the changing temperatures around it

materials

different types of matter

characteristics

features that help identify or distinguish a person or thing

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