trisandra66 trisandra66

07-11-2016
Biology

Answered

A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occurred during his experiment?

the Powder catches on fire

The powder bubbles

the power heats up

the powder brakes into small particles

Verified Answer :

Anonymous Anonymous

07-11-2016

the powder catches on fire

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