Atoms Flashcards
1
Q
Matter
A
Anything that has mass and takes up space
2
Q
Where does the word ‘atoms’ come from?
A
Greek word meaning ‘invisible’
3
Q
Atomic number
A
Number of protons
4
Q
Radioactive elements
A
Uranium, plutonium, strontium
5
Q
Alpha
A
Fast,but least penetrating
6
Q
Beta
A
High energy penetrate paper
7
Q
Gamma
A
Most energy, penetrate thin metal
8
Q
Uses of nuclear radiation
A
Cancer treatment
Nuclear power
9
Q
Protons
A
+
10
Q
Electrons
A
-
11
Q
Neutrons
A
O
12
Q
Atoms splitting
A
Fission
13
Q
Atoms joining together
A
Fusion
14
Q
Pulls materials of a star inward?
A
Gravity
15
Q
When sun starts to run out of fuel?
A
It will expand into a red giant
