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Questions and Answers
What type of chemical reaction releases thermal energy to the surroundings?
What type of chemical reaction releases thermal energy to the surroundings?
- Exothermic reaction (correct)
- Endothermic reaction
- Reaction where thermal energy is neither released nor absorbed
- Reaction that absorbs thermal energy
In an endothermic reaction, the flow of thermal energy is from the $$ to the $$.
In an endothermic reaction, the flow of thermal energy is from the $$ to the $$.
- Products, reactants
- Reactants, products
- Surroundings, reaction system (correct)
- Reaction system, surroundings
Which of the following statements about the energy changes in a chemical reaction is correct?
Which of the following statements about the energy changes in a chemical reaction is correct?
- The energy changes in a chemical reaction are independent of whether the reaction is exothermic or endothermic.
- The direction of energy flow in a chemical reaction depends on whether the reaction is exothermic or endothermic. (correct)
- Endothermic reactions always release thermal energy, while exothermic reactions always absorb thermal energy.
- Exothermic reactions always release thermal energy, while endothermic reactions always absorb thermal energy.
In an exothermic reaction, the $$ of the reaction system $$ as thermal energy is released to the surroundings.
In an exothermic reaction, the $$ of the reaction system $$ as thermal energy is released to the surroundings.
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Which of the following is an example of an exothermic reaction?
Which of the following is an example of an exothermic reaction?
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