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Matter & Energy #2
SEED 6.2.2
Question | Answer |
---|---|
solid | packed particles that have shape and volume |
liquid | particles that flow and have volume but do not have shape |
gas | particles that are spread apart and do not have shape or volume |
density | the amount of particles packed into a space |
thermal (heat) energy | energy that comes from heat |
temperature | a measure of how hot or cold something is |
pure substance | a substance made of only one thing |
molecule | a group of atoms joined together |
molecule collisions | occurs when molecules bump into each other |
pressure | a force that pushes on something |
particle motion | the movement of particles |