bonding and formula Flashcards
1
Q
what are elements made up of?
A
atoms
2
Q
what do elements form when they chemically react with eachother?
A
compounds
3
Q
what do non metal elements form when they react?
A
molecules
4
Q
what is covalent bonding?
A
atoms sharing electrons to become stable
5
Q
what is a diatomic molecule?
A
two atoms chemically joined together
6
Q
what is a triatomic molecule?
A
three atoms chemically joined together
7
Q
what is valency?
A
the number of bonds an atom needs to make to become stable
8
Q
how do atoms become stable?
A
by bonding with other atoms
9
Q
group numbers valency
1 2 3 4 5 6 7 0
A
1 2 3 4 3 2 1 0
10
Q
how to work out formula?
A
- SYMBOL
- VALENCY
- SWAP
11
Q
di
A
2
12
Q
mon
A
1
13
Q
tri
A
3
14
Q
penta
A
5
15
Q
tetra
A
4
