Chemical hand warmers come wrapped in plastic.
What happens when the plastic is removed and the chemicals inside come in
contact with the oxygen in the air?
A. The mixture of chemicals takes in coldness from its surroundings.
B. A chemical reaction transforms thermal energy into chemical
energy
C. A chemical reaction transforms chemical energy into thermal
energy.
D. The mixture of chemicals takes in heat from its surroundings.
Answers: 3
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The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.
Answers: 2
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What best describes the structure of the declaration of independence?
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Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.
Answers: 2
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Which of the following forest management practices is best for reestablishing areas of forest?
Answers: 1
Chemical hand warmers come wrapped in plastic.
What happens when the plastic is removed and the che...
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