Answer:
They display the number of valence electrons surrounding an element or compound.
Explanation:
Answer:
b
Explanation:
A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds.
Answer:
I think mixture
Explanation:
Mixture because it is a mixture of water and carbon
Answer:
River bed
Explanation:
i dont really know its just what i learned
