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How can you identify gas in a chemical reaction without observing the atoms or molecules?
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How can you identify gas in a chemical reaction without observing the atoms or molecules?

User WasteD
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1 Answer

2 votes

Answer:

There are five signs of a chemical change:

Colour Change.

Production of an odour.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid).

User Ronny Bigler
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