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Rufina [12.5K]
2 years ago
9

Why might it be important in a real life situation, to know if a chemical or physical change occurred?

Chemistry
1 answer:
Roman55 [17]2 years ago
6 0
There are four signs<span> that a chemical reaction has occurred: a </span>change<span> in color, a </span>change<span> in temperature, formation of a gas or formation of a precipitate. A precipitate is a solid that forms when two liquid solutions are mixed. As matter </span>changes<span> in a chemical reaction, it can either absorb or release energy.</span>
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