States of Matter and Atomic Theory

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What particles make up the mass number of an atom?

Back

The mass number is calculated by adding the number of protons and neutrons.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What defines a solid state of matter?

Back

Solids have a definite shape and volume.

Front

What defines a liquid state of matter?

Back

Liquids have a definite volume but take the shape of their container.

Front

What defines a gas state of matter?

Back

Gases do not have a definite shape or volume; they expand to fill their container.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

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Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

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Front

How can one state of matter change to another?

Back

One state of matter can change to another by adding or reducing heat.

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