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Scrat [10]
3 years ago
8

Which method of testing substances is a sure way to identify a chemical reaction?

Physics
2 answers:
marin [14]3 years ago
8 0

Chemical reaction includes chemical changes (modifications in the structures of molecules, new compounds )of the substances in the reaction. As a result of the chemical reaction new substances are formed that cannot be reversed using physical means.

The following method of testing substances is a sure way to identify a chemical reaction:

A. color change

B. Formation of bubbles

D. increase in temperature  

Dmitrij [34]3 years ago
3 0

A change in color hope it helps

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Answer:

661.25, I believe!

Explanation:

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Option B

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You push on a box with 100 N of force, causing it to accelerate at 5 m/s?.
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<h3><u>Given</u><u>:</u><u>-</u></h3>

Force,F = 100 N

Acceleration,a = 5 m/s²

<h3><u>To</u><u> </u><u>be</u><u> </u><u>calculated:-</u><u> </u></h3>

Calculate the mass of the box .

<h3><u>Formula</u><u> </u><u>used:-</u><u> </u></h3>

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\sf \: Force = Mass × Acceleration

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