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Subjects
Science State Board
Class 7
Changes around us
Chemical changes
2.
Exothermic and endothermic changes
Exercise condition:
2
m.
Choose the correct answers:
1
.
__________ is an example of exothermic physical change.
Combustion
Freezing
2
.
The \(ΔH\) is __________ in exothermic reaction.
negative
positive
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