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(HELP FAST)Which of the following always changes when a substance undergoes a chemical change?
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(HELP FAST)Which of the following always changes when a substance undergoes a
chemical change?

(HELP FAST)Which of the following always changes when a substance undergoes a chemical-example-1
User Rori
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3 votes
a- the change of matter
User Rambou
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2 votes
I’m pretty sure it’s a
User JsWizard
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