Physical Science Benchmark 2

Match it! Select the correct answer from the pull down...Good luck!

In a reaction in which hydrogen reacts with oxygen to produce water, which substances are reactants?

The amount of energy needed to change a material from liquid to a gas is the heat of _______.

The amount of energy needed to change a material from a solid state to a liquid state is the heat of _______.

A solid produced from two liquids in a double displacement chemical reaction is called a

Substances that speed up chemical reactions are called _______.

True or False, a state of matter change is a chemical reaction.

The burning of wood in a campfire that produces heat and light would be both an ________ and an ________ reaction.

In which phase of matter or molecules of the substance farther is apart from each other?