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Chemical Reactions and Equations Quiz

5 Questions

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Chemical Reactions and Equations Quiz

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@CongratulatoryVitality

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Questions and Answers

Which of the following is a characteristic of a chemical change?

No change in energy occurs

No change in mass occurs

New substances are produced (correct)

The alteration is temporary

Why is rusting of iron considered a chemical change?

The alteration is temporary

The mass of the object decreases

New substance, iron oxide, is created (correct)

No change in energy occurs

What is an exothermic reaction characterized by?

No change in energy

Production of light energy

Release of heat energy (correct)

Absorption of heat energy

What characterizes an endothermic reaction?

<p>Involves absorption of heat energy</p> Signup and view all the answers

What is recorded along with the products in an exothermic reaction?

<p>Amount of heat produced</p> Signup and view all the answers

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