Chemical Reactions

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products through the rearrangement of atoms.

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

What does it mean for a chemical equation to be balanced?

Back

It means the number of atoms of each element is the same on both the reactant and product sides.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is an example of a physical change?

Back

Melting ice is a physical change, as it does not alter the chemical composition of water.

Front

What is an example of a chemical change?

Back

Burning wood is a chemical change, as it transforms the wood into ash and gases.

Front

What are coefficients in a chemical equation?

Back

Numbers placed before compounds to indicate the number of molecules involved in the reaction.

Front

What are subscripts in a chemical formula?

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Numbers that indicate the number of atoms of each element in a molecule.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed in the process.