Atoms, isotopes and the formation of ions Flashcards
1
Q
Define atomic number.
A
The number of protons in an atom.
2
Q
Define mass number.
A
The total number of protons and neutrons in an atom.
3
Q
How is each isotope recognised?
A
Isotopes of any element have the same chemical properties but differ in mass, therefore each type is recognised by its different mass number.
4
Q
How is an ion formed?
A
If an atom loses or gains an electron it becomes an ion.
