Reaction Profiles (AQA GCSE Chemistry Combined Science): Quizzes
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Practise the questions
10 questions from this quiz
What are reaction profiles also known as?
What are reaction profiles also known as?
Energy diagrams
What does the Y-axis represent on a reaction profile?
What does the Y-axis represent on a reaction profile?
Energy of the system
What does the X-axis represent on a reaction profile?
What does the X-axis represent on a reaction profile?
Progress from reactants to products
What is activation energy?
What is activation energy?
Energy hump that must be overcome
In an exothermic reaction profile, where are reactants positioned relative to products?
In an exothermic reaction profile, where are reactants positioned relative to products?
Higher on the y-axis
What is the sign of the overall energy change in an exothermic reaction?
What is the sign of the overall energy change in an exothermic reaction?
Negative
In an exothermic profile, what does the height difference between reactants and products show?
In an exothermic profile, what does the height difference between reactants and products show?
Energy released to surroundings
In an endothermic reaction profile, where are products positioned relative to reactants?
In an endothermic reaction profile, where are products positioned relative to reactants?
Higher on the y-axis
What is the sign of the overall energy change in an endothermic reaction?
What is the sign of the overall energy change in an endothermic reaction?
Positive
In an endothermic profile, what does the height difference between products and reactants show?
In an endothermic profile, what does the height difference between products and reactants show?
Energy absorbed from surroundings