Which statement best describes what happens during a chemical reaction?

Substances are mixed together but keep their original properties.

A new substance with a completely different identity is formed.

A substance changes its physical state, such as from a solid to a liquid.

The atoms of a substance are destroyed and new atoms are created.

A student mixes two clear liquids. The mixture becomes cloudy and a white solid powder settles at the bottom. What is the most likely explanation for this observation?

The liquids were not mixed thoroughly enough.

One of the liquids evaporated, leaving the other behind.

The temperature dropped, causing one of the liquids to freeze.

A chemical reaction occurred, creating a new solid substance.

change the water's temperature.

make the water evaporate faster.

dissolve the pollutants more effectively.

Baking a cake, where ingredients form a new substance.

Burning wood, which turns into ash and smoke.

An antacid tablet fizzing in water.

Melting an ice cube into liquid water.

It will be heavier than A and B combined.

It will have the same color as Substance A.

It can be easily separated back into A and B.