Atoms Flashcards
1
Q
What do atoms contain?
A
Protons
Neutrons
Electrons
2
Q
What is the charge and mass of protons neutrons and electrons?
A
Protons:
Mass: 1
Charge: +1
Neutrons:
Mass: 1
Charge: 0
Electrons:
Mass: Very small
Charge: -1
3
Q
Where are the protons, neutrons and electrons placed in an atom?
A
Proton & neutrons are in the nucleus
Electrons are in the shells
4
Q
What is and atomic number and how can you find it?
A
The number of protons and the bottom number
5
Q
What is a mass number?
A
Number of protons + number of neutrons
6
Q
How do you find the number of neutrons?
A
Mass number - atomic number
