Unit 1- Sub Atomic Particles Flashcards
0
Q
What does the nucleus contain?
A
Protons and neutrons
1
Q
What are atoms?
A
Small particles that make up every thing
2
Q
Where are the electrons situated?
A
The outer electron shells
3
Q
What charge do protons have?
A
+1
4
Q
What charge do neutrons have?
A
They are neutral
0
5
Q
What change do electrons have?
A
-1
6
Q
How are atoms electrically neutral?
A
They have the same number of positive protons and negative electrons
7
Q
What is the mass of protons and neutrons?
A
Approx. 1 atomic mass unit
8
Q
What is the mass of an electron?
A
Virtually no mass
