Basic Concepts of Matter and Forces

Front

matter

Back

Anything that takes up space and has mass (~weight)

Front

solid

Back

Matter with a definite shape and volume; has tightly packed particles that move mainly by vibrating

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liquid

Back

Matter with a definite volume but no definite shape that can flow from one place to another

Front

gas

Back

Matter that does not have a definite shape or volume; has particles that move in high speeds in all directions

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viscosity

Back

A liquid’s resistance to flow

Front

surface tension

Back

The uneven forces acting on the particles on the surface of a liquid

Front

temperature

Back

Measure of the average kinetic energy of the individual particles of a substance

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heat

Back

Movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature

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melting

Back

Change of matter from a solid state to a liquid state

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freezing

Back

Change of matter from a liquid state to a solid state