SHS Chemistry · Year 2
Energy Changes practice questions
Systems and surroundings, enthalpy change, bond enthalpy, lattice energy and Hess's law.
25 questions in this topic: 14 recall, 6 applying skills and concepts and 5 strategic thinking. Every one carries a written explanation.
Sample questions
5 of 25 questions in this topic. Sign up to answer them and see the explanations.
- Question 1Recall
Enthalpy is a thermodynamic quantity which describes the
- aenergy of a system
- bmass of a system
- cvolume of a system
- dcolour of a system
- Question 2Recall
Hess's Law states that the total enthalpy change of a reaction equals
- athe sum of all the individual enthalpy changes
- bthe largest single enthalpy change
- czero always
- dthe average of the steps
- Question 3Strategic thinking
Forming an ionic lattice from gaseous ions generally
- areleases energy
- brequires energy
- chas no energy change
- dproduces light only
- Question 4Recall
A closed system can exchange
- aheat but not matter
- bmatter but not heat
- cboth heat and matter
- dneither
- Question 5Strategic thinking
Comparing bond dissociation energy with atomisation energy, atomisation energy concerns
- abreaking all bonds in one mole to give gaseous atoms
- bone specific bond only
- cforming a lattice
- dmelting a solid
Answer these and 20 more on Energy Changes
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