Atomic number and Mass number Flashcards
1
Q
What is the mass number?
A
The number of protons PLUS number of neutrons
2
Q
What is the atomic number?
A
The number of protons ( which is equal to the number of electrons)
3
Q
What does the atomic number identify?
A
The element
4
Q
Atoms are neutral, therefore the number of protons is equal to…
A
The number of electrons
5
Q
How do you figure out the number of neutrons?
A
Mass number - atomic number
6
Q
Where is the mass number (with a symbol)
A
The top
7
Q
Where is the atomic number (with a symbol)
A
The bottom
8
Q
What does the atomic number identity?
A
The element (must have same number of protons though!)
