S5 Chemistry: Chapter 7 Reviewer (Term 1)

The energy change of a reaction when a substance is burnt.

(a)  

It is a measure of the strength of the bond.

(a)  

True or False: Polystyrene cups can be used as 'calorimeters' because of their good insulation properties

• True

• False

This is the energy required to break the bonds.

(a)  

Is bond making an endothermic or exothermic process?

(a)  

Which type of reaction releases heat to its surroundings.

• Exothermic reaction

• Endothermic reaction

Name: CH₄

(a)  

The energy change in going from reactants to products in a chemical reaction.

• Heat of reaction

• Heat of neutralisation

• Heat of combustion

• Heat of decoposition

Which of the following is not an endothermic reaction?

• Photosynthesis

• Thermal decomposition of CaCO₃

• The reaction between nitrogen and oxygen

• Aerobic respiration

True or False: For exothermic reactions, heat is given out and 𝚫H is positive.

• True

• False