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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

Reaction Profiles (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Reaction Profiles' from the broader topic Energy Changes. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

How does increasing concentration of reactants affect a reaction as illustrated conceptually (not on the profile shape itself)?
When bond energies are used to calculate overall energy change, the correct approach is to
When bond energies are: C—H = X, C—C = 347, O=O = 498, C=O = 805, O—H = 464, and the overall reaction energy is -2219 kJ per mole (exothermic), which algebraic procedure finds X?
If a reaction profile shows the products at a lower energy level than the reactants, this indicates the reaction is
Which feature of a reaction profile is directly reduced by adding a catalyst?
If a reaction profile has reactants at 150 kJ and products at 40 kJ, the overall energy change ?H is
On a reaction profile, where is the activated complex (transition state) located?
A reaction profile shows two peaks for a reaction mechanism with two steps. The highest peak corresponds to
In bond-energy terms, why do exothermic reactions release energy?
Which of the following statements about the peak(s) on a reaction profile is correct?
If two reaction profiles show the same activation energy but different overall energy changes, they differ in