Question 14
Question 14 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
10. Chemistry of the envi...
10.3. Air quality and climate

Describe how the greenhouse gases carbon dioxide and methane cause global warming, limited to: (a) the absorption, reflection and emission of thermal energy (b) reducing thermal energy loss to space

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