1. Groups in The Periodic Table8
Transition Metals

2. Periods in The Periodic Table

3. Metals and Non-metals in the Periodic Table
The periodic table is a list of all the known elements which are arranged according to the similarities in their properties.
Non-metals are mostly on the right. 8
Metals are on the
left and in the centre.
Transition Metals

4. Who??? Dmitri Mendeleev was Russian Chemist
In 1869 he constructed the Periodic Table

5. Mendeleev TASK 1 Write down at least
3 things you have learnt about Mendeleev and his Periodic Table from the video.

6. How Did He do it?
He arranged elements in order of increasing Atomic Mass
He put elements with similar properties into vertical columns – called ‘groups’
He arranged elements into rows called ‘periods’
He left gaps in his table for elements to be discovered

7. Making Predictions
Used gaps in the table to make predictions about properties of undiscovered elements
For Example: