Atomic Structure Flashcards
1
Q
atom
A
Smallest piece of an element.
2
Q
nucleus
A
The centre of an atom.
3
Q
electron
A
A subatomic particle that orbits the nucleus.
4
Q
electron relative charge
A
-1
5
Q
electron relative mass
A
1/2000
6
Q
alpha particle
A
A positively charged particle made up of two protons and two neutrons.
7
Q
nucleus contains
A
Neutrons and protons.
8
Q
nuclear model
A
A model of the atom that says that the atom has a small central positively charged nucleus with negatively charged electrons moving around the nucleus.
9
Q
most of an atom is
A
empty space
10
Q
proton
A
A positively charged subatomic particle found in the nucleus.
11
Q
proton relative charge
A
1
12
Q
proton relative mass
A
1
13
Q
neutron
A
A neutral subatomic particle found in the nucleus.
14
Q
neutron relative charge
A
0
15
Q
neutron relative mass
A
1
