Chemical Kinetics (Unit 5 Part 2)

Front

In an endothermic reaction, energy is __________.

Back

absorbed

Front

A sunflower makes food during photosynthesis. This process is __________.

Back

endothermic

Front

What is the potential energy (PE) of the reactants in a chemical reaction?

Back

40 kJ

Front

Which number represents the activation energy in a reaction energy diagram?

Back

2

Front

The process of gas turning into liquid and then solid is an example of what type of reaction?

Back

exothermic

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the difference between exothermic and endothermic reactions?

Back

Exothermic reactions release energy, while endothermic reactions absorb energy.

Front

Give an example of an exothermic reaction.

Back

Combustion of fuels.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst lowers the activation energy, speeding up the reaction without being consumed.

Front

What does a reaction energy diagram illustrate?

Back

It shows the energy changes during a chemical reaction, including reactants, products, and activation energy.