Endothermic vs. Exothermic Reactions + Bonds Breaking/Forming

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed or rearranged.

Front

What happens to heat in an exothermic reaction?

Back

In an exothermic reaction, heat is released into the surroundings.

Front

Is cell respiration an endothermic or exothermic reaction?

Back

Cell respiration is an exothermic reaction.

Front

How can you describe an exothermic chemical reaction?

Back

An exothermic chemical reaction releases more energy than it absorbs.

Front

What does an endothermic reaction feel like to the touch?

Back

An endothermic reaction feels cold to the touch because it absorbs heat from the surroundings.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Front

What is bond energy?

Back

Bond energy is the amount of energy required to break one mole of a bond in a substance.

Front

What happens to bond energy in an exothermic reaction?

Back

In an exothermic reaction, the total bond energy of the products is less than that of the reactants.

Front

What happens to bond energy in an endothermic reaction?

Back

In an endothermic reaction, the total bond energy of the products is greater than that of the reactants.