States of Matter & Changes

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties. Examples include baking a cake or burning wood.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting ice or dissolving sugar in water.

Front

What state of matter has a definite shape and volume?

Back

Solid.

Front

What state of matter has a definite volume but no definite shape?

Back

Liquid.

Front

What state of matter has no definite shape and no definite volume?

Back

Gas.

Front

Describe the particle arrangement in a solid.

Back

In a solid, particles are closely spaced and vibrate in place, maintaining a fixed shape and volume.

Front

Describe the particle arrangement in a liquid.

Back

In a liquid, particles are not as closely spaced as in a solid and can slide past each other, allowing liquids to take the shape of their container.

Front

Describe the particle arrangement in a gas.

Back

In a gas, particles are far apart and move freely, resulting in no definite shape or volume.

Front

What happens to the particles of a substance during a chemical change?

Back

During a chemical change, the particles rearrange to form new substances with different properties.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice.