Question

Why do elements in a group on the periodic table have similar chemical properties?

A.
same number of outermost electrons

B.
same number of protons

C.
similar atomic numbers

D.
similar atomic masses

Answer 1

Which terms refer to the smallest pure substances?

A.
mixtures and alloys

B.
molecules and atoms

C.
elements and isotopes

D.
metals and nonmetals

Answer 2

@JoannaBlackwelder

Answer 3

What do you think?

Answer 4

frist one a sceond one d

Answer 5

I agree with a for the first one, but for the second one,

Answer 6

It seems like it could be c or d. I think that both are valid answers.

Answer 7

mhm

Answer 8

c?

Answer 9

Yeah, I think that is what they are looking for.