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This set of MCQs helps you brush up on important chemistry topics and prepare you to dive into skill practice.
What type of chemical reaction absorbs energy and requires energy for the reaction to occur?
Endothermic
Synthesis
Exothermic
Both A and C
Which type of reactions is characteristic of negative heat flow?
Endothermic
Exothermic
Both of these
None of these
Any type of reaction that involves burning (combustion) can be classified as one of the following types of reactions?
Synthesis
Endothermic
Exothermic
Neither
Burning sugar is an exothermic process.
True
False
Which type of reactions is characteristic of negative heat flow?
Endothermic
Exothermic
Both of these
None of these
What type of chemical reaction absorbs energy and requires energy for the reaction to occur?
Endothermic
Synthesis
Exothermic
Both A and C
What is enthalpy?
The reactants of the chemical reaction
Absolute amount of energy is a chemical system
Heat content
None of the above
Which of the following is not an example of exothermic processes?
Combustion of a fuel
Respiration
Nuclear fission
Photosynthesis
True or False, The thermite reaction is an examples of exothermic processes.
True
False
True or False, Work must be done in order to get these reactions to occur. When endothermic reactions absorb energy, a temperature drop is measured during the reaction. Endothermic reactions are characterized by positive heat flow (into the reaction) and an increase in enthalpy (+ΔH).
True
False
