Question 12
Question 12 of 40
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Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
5. Chemical energetics
5.1. Exothermic and endothermic rea...

State that the transfer of thermal energy during a reaction is called the enthalpy change, (Delta H), of the reaction. (Delta H) is negative for exothermic reactions and positive for endothermic reactions

6. Chemical reactions
6.3. Reversible reactions and equil...

Describe how changing the conditions can change the direction of a reversible reaction for: (a) the effect of heat on hydrated compounds (b) the addition of water to anhydrous compounds limited to copper(II) sulfate and cobalt(II) chloride