chemical equations basics

Front

What does CaCO₃ represent in chemistry?

Back

Formula

Front

What does the principle of conservation of mass state?

Back

Matter is not created or destroyed.

Front

What is the Law of Conservation of Matter?

Back

Matter cannot be created or destroyed; it only changes form.

Front

In a chemical reaction, what are the reactants?

Back

Substances that undergo change during the reaction.

Front

In a chemical reaction, what are the products?

Back

Substances formed as a result of the reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What do the coefficients in a chemical equation represent?

Back

The number of molecules or moles of a substance.

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting materials; products are the substances formed.

Front

What does it mean to balance a chemical equation?

Back

To ensure the number of atoms for each element is the same on both sides.

Front

What is a subscript in a chemical formula?

Back

A number that indicates the number of atoms of an element in a molecule.