Protons have a _____________________ charge.

Neutrons have a ______________________ charge.

Substances that form as a result of the reaction are called the _____________.

Balling up paper is an example of a _____________________________.

A process that produces a chemical change is called a ___________________.

A reaction that releases energy is called an __________________________ reaction.

H2O is an example of a ______________________________________.

A reaction that absorbs energy is called an _________________________ reaction.

A change that affects only a substance’s size, shape, or whether it is a solid, liquid, or gas is called a _________________________________________.

Substances that exist before the reaction begins are called the ______________.

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