Studied by 1 person
What model did JJ Thompson suggest for the atom?
The plum pudding model
What did Ernest Rutherford suggest?
That the atom had a positive nucleus with negative electrons around it
What did James Chadwick discover?
Neutrons
What is the relative charge, mass and location of an Electron?
-1, 1/1840 and in the shells
What is the charge, relative mass and location of the proton?
+1, 1 and the nucleus
What is the charge, relative mass and location of the neutron?
0, 1 and in the nucleus
What is a period on the periodic table?
A row
What is a group on a periodic table?
A column
What is an Ion?
A charged particle formed when an atom gains or loses electrons
What is a negative Ion called. E.g. chlorine -
An Anion
What is a positive Ion called? E.g. Na +
A Cation
Will an atom in group 3 form a negative or positive Ion?
Positive
Will a group 7 atom make a positive or negative Ion?
Negative
Why are Ions formed?
Because the elements “want” to get a full outer shell and become stable
What is a shared pair of electrons called?
A covalent bond
What do you call two or more atoms covalently bonded togethor?
A molecule
What is an Ionic bond?
The strong, electrostatic attraction between oppositely charged Ions
