Physical vs. Chemical Changes

Front

What is a Physical Change?

Back

A change that does not create new substances. Examples include cutting, tearing, or melting.

Front

What is a Chemical Change?

Back

A change that results in the formation of one or more new substances. Examples include burning, rusting, or cooking.

Front

What is a Physical Property?

Back

A characteristic that can be observed or measured without changing the substance, such as color, size, or shape.

Front

What is a Chemical Property?

Back

A characteristic that can only be observed during a chemical reaction, such as flammability or reactivity.

Front

What is a Quantitative Observation?

Back

An observation that involves measurements and numbers, such as height, weight, or temperature.

Front

What is a Qualitative Observation?

Back

An observation that describes qualities or characteristics using the senses, such as color, smell, or texture.

Front

Example of a Physical Change:

Back

Melting ice into water.

Front

Example of a Chemical Change:

Back

Baking a cake.

Front

What happens to the molecules during a Physical Change?

Back

The molecules rearrange but do not change their chemical structure.

Front

What happens to the molecules during a Chemical Change?

Back

The molecules break apart and form new molecules with different properties.