PS.Chem4

Front

What is the empirical formula for Sodium amide?

Back

NaNH₂

Front

In the compound Mg(NO₃)₂, how many atoms of nitrogen are present?

Back

2

Front

What are the larger numbers that you CAN CHANGE in a chemical equation?

Back

Coefficient

Front

What is a balanced chemical equation?

Back

An equation that has equal numbers of each type of atom on both sides, representing the conservation of mass.

Front

What is a sign of a chemical change?

Back

Release of light, sudden color change, gas is given off.

Front

Which of the following is not a sign of a chemical change?

Back

Temperature change

Front

What is a mole ratio?

Back

The ratio of moles of one substance to the moles of another substance in a balanced chemical equation.

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the difference between reactants and products in a chemical equation?

Back

Reactants are the starting materials, and products are the substances formed as a result of the reaction.

Front

What does the law of conservation of mass state?

Back

Mass is neither created nor destroyed in a chemical reaction.