Thermochemistry 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 of the surroundings.

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 of the surroundings.

Front

How does the kinetic energy of a gas compare to that of a liquid?

Back

A gas has more kinetic energy than a liquid.

Front

What happens to temperature when kinetic energy increases?

Back

When kinetic energy increases, temperature increases.

Front

What is the formula for calculating energy change in a reaction?

Back

Front

If a reaction has a positive ΔH, what type of reaction is it?

Back

If a reaction has a positive ΔH, it is an endothermic reaction.

Front

If a reaction has a negative ΔH, what type of reaction is it?

Back

If a reaction has a negative ΔH, it is an exothermic reaction.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is the energy required to react 4 moles of A in the reaction A + 2B -> 3C with ΔH = 640 kJ?

Back

The energy required to react 4 moles of A is 2560 kJ.

Front

What does it feel like to touch an endothermic reaction?

Back

Touching an endothermic reaction will feel cold.