A good example would be a reaction between vinegar and Baking soda. The 2 react to form a gas.
Methane and oxygen react to form water and carbon dioxide and release considerable heat.
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Precipitation.
Sodium(Na)
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Burning is a chemical change.
It's a chemical change
its a chemical change
It is a chemical change.
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If a chemical reaction produces a gas, and the bag is close of, then the bag will inflate. Take the exmaple of vinegar and baking soda: CH3CO2H + NaHCO3 --> NaCH3CO2 + H2O + CO2 The CO2 released is a gas, which can inflate a bag.
Its a chemical change.