Science Test Cam

Physical or Chemical Change?

Sodium hydroxide dissolves in water.

Physical or Chemical Change?

Hydrochloric acid reacts with potassium hydroxide to produce a salt water and heat.

Physical or Chemical Change?

A pellet of sodium is sliced in two.

Physical or Chemical Change?

Water is heated and changed to steam.

Physical or Chemical Change?

Potassium chlorate decomposes to potassium chloride and oxygen gas.

Physical or Chemical Change?

Iron rusts.

Physical or Chemical Change?

When placed in H2O, a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms.

Physical or Chemical Change?

Evaporation.

Physical or Chemical Change?

Ice melting.

Physical or Chemical Change?

Milk sours.