Atomic theory 6 Flashcards
1
Q
compound
A
substance made of two or more elements chemically combined
2
Q
what combines elements together
A
chemical bonds
3
Q
element
A
substance which can’t be reduced to other simpler substances by chemical means or produced by combining simpler substances.
4
Q
noble gases
A
don’t often form chemical bonds with other atoms as they have 8 valence electrons
5
Q
do all noble gases have full outer shells?
A
No, He and Ne don’t but the others have 8 electrons in their outer shell which makes them stable.
6
Q
group 1 valency
A
1
7
Q
group 2 valency
A
2
8
Q
group 3 valency
A
3
9
Q
group 4 valency
A
USUALLY 4
10
Q
group 5 valency
A
USUALLY 3
11
Q
group 6 valency
A
USUALLY 2
12
Q
group 7 valency
A
1
13
Q
noble gases valency
A
0
