Asked by marie

Which cannot be separated into simpler substances by physical or mechanical methods such as filtering, boiling, or sifting?
A. a crystalline solid
B. a sublimation
C. a pure substance
D. an amorphous solid

I think it is A am I right?

Answers

Answered by marie
anyone?
Answered by DrBob222
I don't think it's A.
Answered by Weather
A is incorrect. Please re-read this question carefully and when you're done, please try again.
Answered by haikyuu
what is the correct answer then?????
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