Atoms, Matter and their Properties Review

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of protons, neutrons, and electrons.

Front

What are the three states of matter?

Back

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

Front

What is a solid?

Back

A solid is a state of matter that has a fixed shape and volume, with molecules that are closely packed together and vibrate slowly.

Front

What is a liquid?

Back

A liquid is a state of matter that has a definite volume but takes the shape of its container, with molecules that are close together but can move freely.

Front

What is a gas?

Back

A gas is a state of matter that has no fixed shape or volume, with molecules that are far apart and move quickly.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.

Front

What is condensation?

Back

Condensation is the phase change when a gas turns into a liquid, often occurring when the gas cools down.

Front

What is evaporation?

Back

Evaporation is the process by which a liquid turns into a gas, usually occurring at the surface of the liquid.

Front

What are physical properties?

Back

Physical properties are characteristics of matter that can be observed or measured without changing the substance's identity, such as color, mass, and volume.

Front

What is melting?

Back

Melting is the phase change from solid to liquid, occurring when a solid is heated to its melting point.