Types of Reactions Review

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction, such as reactivity with water.

Front

What is a sign of a chemical change?

Back

Signs of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it transforms the wood into ash and gases.

Front

What happens to temperature during an endothermic reaction?

Back

The temperature decreases because the reaction absorbs heat from the surroundings.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases because the reaction releases heat to the surroundings.

Front

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

Back

A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes from solid to liquid without altering its chemical structure.

Front

What is the definition of a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.