Chemical Reactions

Front

What is a chemical reaction?

Back

A process where reactants undergo a transformation to form products, involving the breaking and forming of chemical bonds.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy in the form of light or heat.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or atoms of each reactant and product involved in a reaction.

Front

What happens to atoms during a chemical reaction?

Back

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

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in the formation of new substances.

Front

What is the law of conservation of mass?

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 reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is a product?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of each type of atom on both sides, indicating that mass is conserved.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs energy from its surroundings, usually in the form of heat.