1.2 - Atomic Structure Flashcards
(19 cards)
1
Q
Electron charge
A
Negative
2
Q
Proton charge
A
Positive
3
Q
Neutron charge
A
Neutral
4
Q
Number of protons
A
Atomic number
5
Q
Number of electrons
A
Atomic number
6
Q
Number of neutrons
A
Mass number - atomic number
7
Q
Isotope
A
An atom with the same number of protons and electrons but with a different number of neutrons
8
Q
Number of shells
A
Period
9
Q
Number of electrons in last shell
A
Group
10
Q
What’s in the nucleus ?
A
Neutrons and protons
11
Q
Proton mass
A
1
12
Q
Neutron mass
A
1
13
Q
Electron mass
A
Almost zero
14
Q
Ion
A
When an atom looses or gains electrons
15
Q
An atom looses electrons
A
Positive ion
16
Q
An atom gains electrons
A
Negative ion
17
Q
Top number on symbol
A
Mass number
18
Q
Bottom number on symbol
A
Atomic number
19
Q
Ar (Isotopic abundance)
A
(Mass 1 x abundance 1) + (Mass 2 x abundance 2) / 100
