1c- Atomic Structure❗️ Flashcards
1
Q
Why are all atoms neutral?
A
They have no overall charge because they have the same number of positive protons as negative electrons
2
Q
What is the relative mass of protons and neutrons?
A
1
3
Q
What mass do electrons have?
A
A negligible mass because they are so small
4
Q
What are the charges of the sub atomic particles?
A
Proton: +1
Neutron: 0 (no charge)
Electron: -1
5
Q
What does the mass number tell us?
A
How many protons and neutrons added together
6
Q
What does the atomic number tell us?
A
How many protons there are
7
Q
How do you know the number of electrons?
A
It will be the atomic number or amount of protons
8
Q
How do you calculate the number of neutrons?
A
Mass number-atomic number
9
Q
What are isotopes?
A
atoms with the same number of protons but different numbers of neutrons
