Front

According to the law of conservation of mass, the mass of the products is __________ the mass of the reactants.

Back

equal to

Front

What speeds up a chemical reaction without being permanently changed?

Back

catalyst

Front

If a reaction starts with 20g of reactants, it should produce __________.

Back

a total of 20g of product

Front

What is a chemical reaction in which 2 or more substances combine to form another substance called?

Back

synthesis

Front

What type of reaction is represented by the equation 2NO2 --> N2 + 2O2?

Back

Decomposition

Front

Define 'reactant' in a chemical reaction.

Back

A substance that undergoes change during a chemical reaction.

Front

What is a 'product' in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is the role of a 'coefficient' in a chemical equation?

Back

It indicates the number of molecules or moles of a substance involved in the reaction.

Front

What is the difference between a 'synthesis' reaction and a 'decomposition' reaction?

Back

A synthesis reaction combines substances to form a new compound, while a decomposition reaction breaks down a compound into simpler substances.

Front

What is an 'inhibitor' in the context of chemical reactions?

Back

A substance that slows down or prevents a chemical reaction.