Which of the following is a clue that a chemical change has taken place?
A.)A gas forms when t...
Which of the following is a clue that a chemical change has taken place?
A.)A gas forms when the change takes place.
B.)The substance is smaller than it was before the change took place.
C.)The substance has been shaken up.
D.)The substance looks the same as it did before the change took place.
Answers: 2
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