9.1 Energy changes in chemical reactions
Authored by Mohamed M.Elhassan
Chemistry
7th Grade
Used 41+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactions that release, or give out, heat are called ..............................................
endothermic.
exothermic.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reactions or changes that take in heat from the surroundings are called ................................... reactions.
endothermic.
exothermic.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Melting is considered an............................................... process.
endothermic.
exothermic.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Evaporation is considered an............................................... process.
endothermic.
exothermic.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mixing dilute hydrochloric acid and sodium hydroxide is an.......................................reaction/process.
endothermic.
exothermic.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mixing sodium hydrogen carbonate with citric acid is an.......................................reaction/process.
endothermic.
exothermic.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dissolving ammonium chloride is an .................................... process.
endothermic.
exothermic.
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