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Air and Atmosphere — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAir and Atmosphere1 Mark
Question
What happens when potassium nitrate is heated ?
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Answer

$\begin{array}{c}\underset{\text { white crystalline solid }}{\text { Potassium nitrate }} \xrightarrow{\text { heating }} \text { Potassium nitrate }+ \text { Oxygen }( g ) \\ 2 KNO _3 \xrightarrow{\text { heating }} 2 KNO _3+ O _2( g )\end{array}$

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