Living by Chemistry
2nd Edition
ISBN: 9781464142314
Author: Angelica M. Stacy
Publisher: W. H. Freeman
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Chapter U5.94, Problem 1TAI
Interpretation Introduction
Interpretation: The reactions that are sources of heat needs to be explained.
Concept introduction: In exothermic reactions reactants changes into products that are very hot. Over time hot products cool down as they transfer heat to the surrounding.
Expert Solution & Answer
Answer to Problem 1TAI
Exothermic reactions are source of heat.
Explanation of Solution
Energy is not a substance, so energy does not have mass and does not take up space. Living things needs energy from the sun to grow. Energy is a measure of ability to cause change to occur. Exothermic reactions transfers energy in the form of heat and light. Fire is an example of exothermic reaction. Thus exothermic reactions are source of heat.
Conclusion
Exothermic changes are associated with big changes to matter. Any change in matter is accompanied by a change in energy.
Chapter U5 Solutions
Living by Chemistry
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