Chemical Reactions Practice

Front

What is a chemical reaction?

Back

A process where reactants transform into products, involving the breaking and forming of chemical bonds.

Front

What is the Law of Conservation of Matter?

Back

Matter cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change during a reaction.

Front

What are products in a chemical equation?

Back

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

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is sulfuric acid's chemical formula?

Back

H₂SO₄.

Front

How many hydrogen atoms are in sulfuric acid (H₂SO₄)?

Back

2 hydrogen atoms.

Front

What indicates that a chemical reaction has occurred?

Back

Signs include color change, temperature change, formation of a gas, or formation of a precipitate.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a compound to indicate how many molecules are involved in the reaction.

Front

What is the significance of the formation of a gas in a reaction?

Back

It often indicates that a chemical change has occurred.