McGraw Hill Lesson Check: Particles in Motion

Why is liquid used in a thermometer?

• kinetic energy

• heat

• thermal contraction

• thermal expansion

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The energy of motion.

• kinetic energy

• diffusion

• random motion

• particle

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The movement of substances from an area of high concentration to an area of low concentration.

• kinetic energy

• thermal expansion

• diffusion

• matter

A small unit of matter

• diffusion

• thermal contraction

• cold

• particle

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Particles don't move in a pattern, they move in...

• thermal contraction

• random motion

• thermal expansion

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What happens to temperature when there is greater kinetic energy?

• It increases

• It decreases

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Thermal expansion is

• particles slow down, avoid each other and take up less space

• particles disappear and take up no space

• particles move faster, bump into each other, and need more space

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What best describes particles in a solid?

• They move quickly and bounce off each other

• They are close together and vibrate in place

• They are far apart and vibrate in place

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Liquid thermometers work because

• when liquid is warm it expands

• when a liquid is warm it contracts

• the liquid doesn't do anything

• the liquid solidifies

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When a substance is heated, the particles gain energy and move apart. What happens to the volume of the substance being heated?

• stays the same

• disappears

• decreases

• increases

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