Atoms Flashcards
0
Q
Relative charge and mass of proton
A
Mass:1
Charge:+1
1
Q
Structure of atom
A
Nucleus of protons and neutrons surrounded by electrons
2
Q
Relative charge and mass of neutron
A
Mass:1
Charge:0
3
Q
Relative charge and mass of electron
A
Mass: nearly 0
Charge: -1
4
Q
The mass number is the…
A
Total number of protons and neutrons
5
Q
Atomic number is…
A
Number of protons and the number of electrons (same)
6
Q
What are isotopes
A
Different atomic forms of the same element, which have the same number of protons but a different number of neutrons
7
Q
How many electrons in the first shell
A
2
8
Q
How many electrons in all shells after the first one?
A
8
