A ___ increases the reaction rate by lowering the activation energy needed.

Activation energy is used to

When one element replaces another element in a compound, that is a ___ reaction

Who first demonstrated the principle of the law of conservation of mass?

What is on the right of a chemical equation?

A characteristic of a substance that describes its ability to change into other substances.

An example of chemical property is

A change in state is classified as a

In a chemical change, the existing bonds break and never reform.

A solid that forms from liquids during a chemical reaction.

An endothermic reaction...

We separate reactants in a chemical equation with a

Activation energy is the ___ amount of energy needed to start a reaction.

Warming up reactants can help ___ a reaction

Biological catalysts that help reactions occur at body temperature are called

The preservatives in food slow down spoilage. This is an example of

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