A student placed a short candle and a slightly taller candle in a small dish filled with baking
soda as shown in the figure. The child then lights both the candles and poured vinegar into the
dish of baking soda.Mention one precaution the student needs to follow while pouring the vinegar into the dish of
baking soda.
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a chemical process in which a substance reacts with oxygen to give off heat is called combustion.
Explanation:
a chemical process in which a substance reacts with oxygen to give off heat is called combustion. The substance that undergoes combustion is said to be combustible. It is also called a fuel. The fuel may be solid, liquid or gas. Sometimes, light is also given off during combustion, either as a flame or as a glow.
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