chemical equations basics

Front

What does the principle of conservation of mass mean in chemical reactions?

Back

Matter is not created or destroyed.

Front

Identify the reactants in a chemical equation.

Back

Reactants are the starting substances in a chemical reaction.

Front

What does CaCO₃ represent in chemistry?

Back

CaCO₃ is a chemical formula.

Front

How many Hydrogen (H) atoms are in NH₃O₅?

Back

There are 3 Hydrogen (H) atoms.

Front

Is a molecule smaller than an atom?

Back

False, a molecule is made up of two or more atoms.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate the number of molecules.

Front

What is the difference between a chemical symbol and a chemical formula?

Back

A chemical symbol represents a single element, while a chemical formula represents a compound.

Front

What does the subscript in a chemical formula indicate?

Back

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