2. answer is C.<span> Elements have the same physical and chemical properties in any period </span>
My calculations say it'll take 600 hours???
Pure substances are substances which are homogenous in nature. They either consists of atoms of 1 kind or molecules of 1 kind. Atoms are seen in elements, where as molecules are seen in compounds like Acids, Bases, etc.
They mostly have fixed properties like boiling and melting points and are uniform in nature. :D
Answer:
A
Explanation:
I think the answer would be A
Answer:
I Think it might be A! I hope I am right!
