1. What atom is being shown below? Label all its features.
This atom is _____________.
Complete the rules below:
1st shell holds ____________________
2nd shell holds ____________________
3rd shell holds ____________________
4th shell holds ____________________
Complete the table below:
Element
Symbol
Electron Configuration
Lithium Mg
Calcium
Neon
2,8
2,8,8,1
Complete the sentences below:
In a neutral atom, the number of _______________ and the number of ________________ must be equal.
The mass of the atom is mainly found in the _______________ of the atom.
Atoms are very ____________ and have a radius of about _____________. The nucleus is ______________ of this size. 28 Si
Draw the structure of Silicon below:
Complete the sentences below:
This is an __________.
Example ___________
This is a __________.
Example ___________
This is a __________.
Example
___________
This is a __________.
Example ___________
Atomic number is the number of _______________ which is equal to the number of _______________.
Mass number is the number of ________________ and the number of _________________ added together.
All atoms of a particular element have the same number of _______________.
We can tell the Group Number that an element is in by looking at ____________________________________
____________________________________________.
Silcon 14
Complete the table below:
Sub-Atomic Particle
Relative Charge
Relative Mass
Electron Configuration
___,___,___
The columns of a Periodic Table are called ____________.
Element
Mass Number
Atomic Number
No. of Electrons
No. of Protons
No. of Neutrons
Hydrogen
Bromine
Boron
Aluminium
Carbon
The rows of the Periodic Table are called the ____________.

2. Draw the structure of Potassium below:
Complete the definitions below:
Label the diagram correctly:
An atom is a: ____________________________________________.
A compound is: _______________________________________________________________________________________________________________________________________.
A mixture is:
_______________________________________________________________________________________________________________________________________.
Describe in detail (and in steps) how we can separate a mixture of salt water and sand.
_________________________________________________________________________________________
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 39 K
Draw the structure of Potassium below:
Potassium 19
Electron Configuration
___,___,___
Describe the key differences between the Plum-Pudding Model and the Nuclear Model. Ensure you mention the names of two famous Scientists who came up with each model of the atom.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
This is a ____________.
This is a _____________.
Plum-Pudding Model
Nuclear Model
This is a ____________.