The starter and exit quiz of the lesson “Breaking and making bonds”, from the unit “Energy changes in reactions” (Year 10 Science) by Oak National Academy.
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Oak National Academy
12 questions
What does an energy profile diagram show?
What occurs during a chemical reaction?
What is an exothermic reaction?
What is an endothermic reaction?
What is activation energy?
In which energy profile, does the blue arrow show the energy change of a exothermic reaction?
The overall energy change for an exothermic reaction is...
Photosynthesis absorbs 250 kJ of energy from the surroundings. Is this reaction endothermic or exothermic?
Given the following data: reactants energy = 200 kJ, products energy = 300 kJ, what is the overall energy change? Is the reaction endothermic or exothermic?
The decomposition of calcium carbonate requires 150 kJ of energy. What type of reaction is this?
Given the following data: reactants energy = 400 kJ, products energy = 250 kJ, what is the overall energy change? Is the reaction endothermic or exothermic?
During the combustion of methane, the reactants have an energy of 500 kJ and the products have an energy of 300 kJ. What is the overall energy change? Is the reaction endothermic or exothermic?
