(Q2-2023) Benchmark Review

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat, causing the temperature of the surroundings to increase.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings, causing the temperature of the surroundings to decrease.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature decreases.

Front

What is a chemical reaction?

Back

A process that involves the transformation of substances through the breaking and forming of chemical bonds.

Front

What is a physical reaction?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the difference between an exothermic and an endothermic reaction?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

What is the law of conservation of mass?

Back

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