Exothermic&Endothermic reactions

Question 1

Exothermic reaction

Answer 1

Gives out energy to the surroundings usually in the form of heat

Question 2

Endothermic reaction

Answer 2

Takes energy in from the surroundings in the form of heat

Question 3

Examples of exothermic reaction (4)

Answer 3

1) Combustion 2) Respiration 3) Neutralisation 4) Metals + acid

Question 4

Examples of endothermic reaction (2)

Answer 4

1) Thermal decomposition 2) Photosynthesis

Question 5

In an exothermic reaction what has more energy (reactants products)

Answer 5

Reactants

Question 6

In an endothermic reaction what has more energy (reactants products)

Answer 6

Products

Question 7

Oxidation

Answer 7

Loss of electrons/gaining of oxygen

Question 8

Reduction

Answer 8

Gain of electrons/loss of oxygen

Question 9

On a reaction pathway graph what is the distance between products and reactants called?

Answer 9

ΔH

Question 10

On a reaction pathway graph what is the distance between reactants and activation barrier called?

Answer 10

Activation energy