Chemical reaction

Question 1

Endothermic reaction

Answer 1

Reactions where heat is absorbed

Question 2

Exothermic reaction

Answer 2

Reactions where heat is released

Question 3

Endothermic reaction properties

Answer 3

Reactants make products
Strong bonds break and weak bonds form
Reactants have high energy input
Empalthy is bigger than 0

Question 4

Exothermic reaction properties

Answer 4

Change in empalthy is negative and smaller than 0
Weak bonds break and strong bonds form
Energy of products is bigger than energy of reactants