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What can you observe to know that when clear methane gas is burned it is a chemical change?

1)Change of color
2) Formation of a precipitate
3) Change in mass
4) Formation of a gas
5) Change in temperature
6) Change in shape

1 Answer

5 votes
4) Formation of a gas

When methane burns, it produces the gases water vapor and carbon dioxide.
User FattRyan
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