C7.1 Exothermic and Endothermic reaction

Question 1

What are exothermic reactions?

Answer 1

➢ Where reacting chemicals transfer energy to their surroundings

Question 2

What are endothermic reactions?

Answer 2

➢ Other reactions transfer energy from the surroundings to the reacting chemicals

Question 3

What happens when a exothermic reaction takes place?

Answer 3

➢ There is a rise of temperature

Question 4

What happens when an endothermic reaction happens?

Answer 4

➢ Temperature decreases in the surroundings

Question 5

What is the most common example of an exothermic reaction?

Answer 5

➢ Combustion

Question 6

What amount of energy do products of an exothermic reaction have compared with the reactants?

Answer 6

➢ Lower amount

Question 7

What is an example of an endothermic reaction?

Answer 7

➢ Thermal decompostion

Question 8

What amount of energy do products of an exothermic reaction have compared with the reactants?

Answer 8

➢ Higher energy content than reactants