2. Select the correct answer,
When a candle burns, which forms of energy does the chemical energy in the candle change to?
СА.
light and sound
OB heat and sound
C. light and heat
D.
electric and light
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answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.