Topic C1 - Atomic Structre & The Periodic Table Flashcards
What are isotopes
Atoms with the same number of protons but different numbers of neutrons
Describe the plum pudding model
A ball of positive charge containing small negative electrons
Explain the Bohr model
Electrons orbit nucleus in fixed shells
Who discovered the neutron
James Chadwick
How was Mendeleevs period table ordered
By atomic weight
How is the moderne day periodic table ordered
By increasing atomic number
How do metals get a full outer shell
By losing electrons
How do non metals get a full outer shell
By gaining or sharing electrons
When are metals more reactive
When they lose electrons more easily
When are non metals more reactive
When they gain electrons more easily
As you go down group 1 what happens to the reactivity
Increases
As you go down group 1 what happens to the melting and boiling points
Decrease
As you go down group 1 what happens to the relative atomic mass
Increases
As you go down group 0 what happens to the boiling point
It increases
As you go down group 7 what happens to the reactivity
Decreases
