2021 ICP Fall Final

Front

What is a chemical change?

Back

A chemical change involves a transformation that alters the chemical composition of a substance, resulting in the formation of new substances.

Front

What is an example of a chemical change?

Back

Chewing and digesting food, such as a bagel and cream cheese, is a chemical change because it breaks down the food into new substances.

Front

What does it mean for a solution to be supersaturated?

Back

A supersaturated solution contains more solute than can normally dissolve at a given temperature, often achieved by heating the solution and then cooling it.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy to its surroundings, usually in the form of heat.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share electrons to fill their outer electron shells.

Front

What happens to temperature in an exothermic reaction?

Back

In an exothermic reaction, the temperature of the surroundings increases as energy is released.

Front

What happens to temperature in an endothermic reaction?

Back

In an endothermic reaction, the temperature of the surroundings decreases as energy is absorbed.

Front

What is the difference between saturated and unsaturated solutions?

Back

A saturated solution contains the maximum amount of solute that can dissolve at a given temperature, while an unsaturated solution can still dissolve more solute.

Front

What is the role of energy in breaking chemical bonds?

Back

Energy must be absorbed to break chemical bonds, which is characteristic of endothermic reactions.