Question

What is a substance that cannot be separated into simpler substances by physical or mechanical methods such as filtering, boiling, or sifting?

A crystalline solid
A sublimation
A pure substance ••
An amorphous solid

Correct me if I'm wrong
Sid.V
You are correct :)
N
I agree
Lord help these people
What is the flipping answer.
Angela
A crystalline solid
help these kids
what is the eeefing answer.
TAYLOR
A crystalline solid