AnswersGCSS_Physical Science_ICIntroduction to Chemical Reactions

Introduction to Chemical Reactions Answers

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Which indicator of a chemical reaction is shown in the picture?

A
the formation of a gas
B
the formation of a precipitate
C
a change in energy
2
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What facts did you include in your response? Check all that apply.

A
Burning a match represents an exothermic reaction.
B
Chemicals release energy in the form of heat and light.
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Identify the chemical reactions as endothermic, exothermic, or neither.

Answers:
An egg cooking::endothermic
A candle burning::exothermic
Plaster and water combining and becoming warm::exothermic
Salt being added to water, with no change in temperature::neither
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exothermicendothermicneither

A
exothermic
B
endothermic
C
neither
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exothermicendothermicneither

A
exothermic
B
endothermic
C
neither
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exothermicendothermicneither

A
exothermic
B
endothermic
C
neither

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