What is a chemical reaction and how can we identify them?

Science

A chemical reaction involves a change in the arrangement of particles.

A match burning is an example of a chemical reaction.

Salt dissolving is an example of a chemical reaction.

The energy gained by particles when a substance is heated.

The substances at the start of a chemical reaction.

The substances that form in a chemical reaction.

The substances that stay the same in a chemical reaction.

The particles are not arranged in a regular pattern.

The particles can move freely in all directions.

When water becomes ice the process is called ...

Burning paper is an example of a physical change.

Sugar dissolving in water is an example of a physical change.

A ceramic bowl smashing is not an example of a physical change.