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Heat — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceHeat2 Marks
Question
Describe the effects of heat.
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Answer

The effects of heat are
(i) When an object is heated, then it becomes hotter and may expand. So, in this, heat may change the state of the body like ice can also change into the water.
(ii) Heat sometimes acts as a catalyst to speed up the chemical reaction.
(iii) Heat can even kill the bacteria as well.

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