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level: Energy changes

Questions and Answers List

level questions: Energy changes

QuestionAnswer
Describe the change occurring as a substance freezes.energy is removed
Describe the change occurring as a substance condenses.energy is removed
Describe the change occurring as a substance melts.energy is added
Describe the change occurring as a substance evaporates.energy is added
Does changing state from a liquid to a gas release or absorb energy?absorb
Does changing state from a solid to a liquid release or absorb energy?absorb
Does changing state from a liquid to a solid release or absorb energy?release
Does changing state from a gas to a liquid release or absorb energy?releases energy
A substance changing from a gas to a liquid is an example of what kind of a reaction?exothermic
A substance changing from a liquid to a solid is an example of what kind of a reaction?exothermic
A substance changing from a liquid to a gas is an example of what kind of a reaction?endothermic
A substance changing from a solid to a liquid is an example of what kind of a reaction?endothermic
Which examples illustrate an endothermic reaction?Chocolate melting in the sun
Which example illustrates an exothermic reaction?Water freezing
Is there an increase or a decrease in the temperature of a substance after an exothermic reaction?increase
Is there an increase or a decrease in the temperature of a substance after an endothermic reaction?decrease
Does the following graphic illustrate a release or absorption of energy?absorption
What type of reaction does the following graphic illustrate?endothermic
What type of reaction does the following graphic illustrate? exothermic