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Question 10 of 25Which could be signs that a chemical reaction has occurred?aCheck all that apply.A. New substances have formed.B. A liquid boiled.C. Heat is produced.O D. A solid melts.

Question 10 Of 25Which Could Be Signs That A Chemical Reaction Has OccurredaCheck All That ApplyA New Substances Have FormedB A Liquid BoiledC Heat Is ProducedO class=

Sagot :

ANSWER

Option A and C

EXPLANATION

A chemical reaction will occur when the atomic structure of the reactants re-arrange itself to form new product.

Below are the signs of chemical reaction

1. emission of light

2. change in temperature

3. formation of precipitate

4. Changes in volume

5. Changes in color

Therefore, the correct answer is option A and C

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