Atoms, Molecules And Compounds Flashcards
0
Q
What is a compound?
A
Molecules containing different types of atoms
1
Q
What do atoms join to make?
A
Molecules
2
Q
Describe atoms
A
VERY tiny
Nucleus is positively charged
Electrons negatively charged
Electrons move around nucleus in layers (shells)
3
Q
Atoms bond together to make ….(2)
A
Molecules or compounds
4
Q
How are ions created?
A
An atom gains or loses 1/more electron to give a charge
Positive if it loses an electron
Negative if it gains an electron
5
Q
What name is given to a charged atoms?
A
Ions
6
Q
How is an ionic bond formed?
A
Positive ion meets negative ion
7
Q
What is a covalent bond?
A
When atoms SHARE a pair of electrons
8
Q
Carbon dioxide
A
CO 2
9
Q
Hydrogen
A
H 2
10
Q
Water
A
H2O
11
Q
Hydrochloride acid
A
HCL
12
Q
Carbon monoxide
A
CO
13
Q
Oxygen
A
O2
14
Q
Sodium carbonate
A
Na2CO3
