Chemical Reactions

Front

What are the products in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction, found on the right side of the equation.

Front

What are reactants in a chemical reaction?

Back

The starting substances that undergo a chemical change, found on the left side of the equation.

Front

What happens to atoms during a chemical reaction?

Back

The atoms of the reactants unbond, rearrange, and then rebond to form the products.

Front

In the equation 2 Al2O3 --> 4 Al + 3 O2, how many aluminum atoms are on the reactant side?

Back

6 aluminum atoms.

Front

What is the difference between a chemical change and a physical change?

Back

In a chemical change, a new substance is formed, while in a physical change, no new substance is formed.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction, showing the reactants and products.

Front

What does the law of conservation of mass state?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides of the equation.

Front

What role do catalysts play in chemical reactions?

Back

Catalysts speed up chemical reactions without being consumed in the process.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy, usually in the form of heat.