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Chemical Reactions, Activation Energy, and Catalysts

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Chemical Reactions, Activation Energy, and Catalysts

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Questions and Answers

Which type of reaction involves energy being absorbed during the reaction?

Exothermic

Burning

Condensation of water vapor

Photosynthesis (correct)

What is the main function of enzymes in cellular respiration?

To control the type of reactants

To function in non-ideal conditions

To release energy

To speed up chemical reactions (correct)

In an exothermic reaction, where does the energy released go?

Into the products

Into the surroundings (correct)

Into the catalysts

Into the reactants

Which process literally 'burns sugar in the presence of oxygen'?

Cellular respiration Signup and view all the answers

What is characteristic of an endothermic reaction graph?

Energy of reactants is higher than energy of products Signup and view all the answers

Which of the following is an example of an exothermic reaction?

Cooking an egg Signup and view all the answers

What is activation energy?

The minimum amount of energy required to start a reaction Signup and view all the answers

How do catalysts affect reactions?

Reduce activation energy Signup and view all the answers

What type of process is the melting of ice to water?

Endothermic process Signup and view all the answers

Which of the following provides the energy for photosynthesis?

Sunlight Signup and view all the answers

What is the role of enzymes in cellular respiration?

Decrease activation energy Signup and view all the answers

What is the main product of photosynthesis?

Glucose Signup and view all the answers

Which of the following is an example of an exothermic process?

Boiling water Signup and view all the answers

What is the function of the endocrine system in the body?

Regulating blood sugar levels Signup and view all the answers