How many electrons can fit in an atom's first shell?
2
How many electrons can fit in an atom's second shell?
8
How many electrons can fit in an atom's third shell?
8
Which periodic table group are the alkali metals?
1
Why are the alkali metals so reactive?
They only have one electron in their outer shell
Which is the most reactive alkali metal out of lithium, sodium and potassium ?
Potassium
Which group of the periodic table are the Halogens?
7
Why are the Halogens so reactive?
They are missing one electron from their outer shell.
Which group in the periodic table are the Noble gases?
Group 0
Why are the noble gases so unreactive?
They have a full outer shell
The flame test experiment provides evidence that an atom's electrons are in shells [True / False]
True
Which model of the atom did this experiment lead to?
Rutherford or nuclear model
What are the alpha particles being fired at in the Rutherford experiment?
Gold leaf
Most of the alpha particles went straight through the gold atoms is the Rutherford experiment. what did that tell us about the atom?
An atom is mostly empty space
Some alpha particles were deflected by the gold atoms, what did that tell us about the atom?
The atom has a positive nucleus
