Structure of Atoms and Ions Flashcards
1
Q
Relative charge and mass of subatomic particles
A
Protons, +1, 1
Neutrons, 0, 1
Electrons, -1, negligible
2
Q
Structure of atoms in terms of positions
A
Neutrons and protons found in nucleus
Electrons found in shells
3
Q
What is the atomic and mass number
A
Atomic number is the number of protons
Mass number tells us the number of protons and neutrons in the nucleus
4
Q
How to find how many electrons are in an atom
A
Number of electrons = number of protons
5
Q
How to find number of neutrons in an atom
A
Number of neutrons = mass number - atomic number
6
Q
How are ions formed
A
Ion - charged atom
Metals lose electrons to form positive ions
Non - metals gain electrons to form negative ions
7
Q
Why do atoms lose/gain electrons
A
To achieve full electron shells
