elements compounds and mixtures Flashcards
1
Q
what is an element?
A
an element is a substance that is only made of one type of atom. elements are the simplest substances in the universe
2
Q
what is a compound?
A
if atoms of 2 or more element
3
Q
fill in gaps
IRON + ____ -> ____ SULPHIDE
A
sulphur iron
4
Q
what is a mixture
A
2 or more substances not chemically joined together
5
Q
what is a compound
A
any substance composed of identical molecules consisting of atoms of two or more elements
