Matter and Particles

Explain why paper moves when you blow on it.

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How can we prove that matter is made of particles that are too small to be seen?

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What is matter?

• anything with volume and mass

• the smallest particle of an element

• a particle in the nucleus of an atom

• an experiment that takes place in the mind

What is mass?

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Why do chemists study atoms?

• to discover new planets

• to find new sources of water

• to understand how matter is formed

• to learn how plants defend themselves

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True or False: The human body is made up of atoms.

• True

• False

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Which idea did Democritus teach?

• There are three particles in an atom.

• Protons exist in the nucleus of an atom.

• Electrons can be used to create electricity.

• There is a particle of matter that cannot be divided.

What happens when you combine hydrogen and oxygen?

• You get gold.

• You get a solid.

• You get a gas.

• You get water.

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Which of the following is an example of a slow change?

• burning paper

• cooking bacon

• clouds changing shape

• mountains becoming hills

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What is the term for when a cold temperature turns a liquid into a solid?

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