Atoms Flashcards
1
Q
Where in the atom is the Nucleus?
A
The centre of the atom
2
Q
What does the Nucleus contain?
A
Protons and neutrons
3
Q
What type of charge does the Nucleus have and why?
A
Positive because of the protons
4
Q
Where is most of the mass of the atom?
A
It is concentrated in the Nucleus
5
Q
How big is the nucleus in comparison to the atom?
A
Tiny
6
Q
What do electrons move around in?
A
Shells
7
Q
What charge do electrons have?
A
Negative
8
Q
What does the size of an electron’s orbit determine?
A
The size of the atom
9
Q
What is an electron’s mass
A
1/2000
10
Q
Protons are…
A
Heavy and positively charged
11
Q
Neutrons are…
A
Heavy and neutral
12
Q
Electrons are…
A
Tiny and negatively charged
13
Q
What is a proton’s relative mass?
A
1
14
Q
What is a proton’s relative charge?
A
+1
15
Q
What is a neutron’s relative mass?
A
1
