Endothermic and Exothermic Assessment

Front

What is the SI unit of energy?

Back

Joule (J)

Front

Is the ΔH value in an endothermic reaction a positive number?

Back

True

Front

If the enthalpy change is a negative (-) value, where will the energy value be in the equation?

Back

Products

Front

In a reaction with heat (-890.4 KJ), will the heat be a product or a reactant?

Back

Product

Front

Define 'Enthalpy'.

Back

Energy stored in the chemical bonds in a substance.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is an exothermic reaction?

Back

A reaction that releases energy to its surroundings.

Front

What happens to the temperature of the surroundings during an endothermic reaction?

Back

The temperature decreases.

Front

What happens to the temperature of the surroundings during an exothermic reaction?

Back

The temperature increases.

Front

What is the formula for calculating enthalpy change (ΔH)?

Back

ΔH = H_products - H_reactants.