Ch 19 Chemical Reactions

Front

What is a chemical reaction?

Back

A change in which one or more substances are converted into a new substance.

Front

What is an inhibitor?

Back

A substance that slows down or prevents a chemical reaction.

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed.

Front

What does the law of conservation of mass state?

Back

The mass of the products in a chemical reaction is equal to the mass of the reactants.

Front

What must happen for a chemical reaction to occur?

Back

Molecules must collide.

Front

What are coefficients in a chemical equation?

Back

Numbers in front of the symbols and formulas that indicate the number of molecules involved.

Front

What is the difference between reactants and products?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result.

Front

What is an example of a chemical change?

Back

Burning wood, which transforms it into ash and smoke.

Front

What is oxidation?

Back

A chemical reaction that involves the loss of electrons or an increase in oxidation state.

Front

What is reduction?

Back

A chemical reaction that involves the gain of electrons or a decrease in oxidation state.