Does seeing a gas produced always mean a chemical reaction is occurring? Explain.

2 answers:

4 0

Seeing signs of a chemical reaction does not always mean that a reaction is happening. For example, a gas (water vapor) is given off when water boils. ... You can tell that it is a physical change because water vapor can condense to form liquid water. In a chemical change, a new substance must be produced.

Alex17521 [72]2 years ago

4 0

Answer:

Explanation:

yes

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