Periodic Table Starter 2

In his original Periodic Table, Dmitri Mendeleev ordered the elements in terms of:

• Atomic Mass

• Chemical Properties

• Physical Properties

• Atomic Mass, Chemical Properties and Physical Properties

An example of a chemical property is:

• Flammability

• Boiling Point

• Conduction of electricity

• Colour

An example of a physical property is:

• State

• Flammability

• Reactivity with water

• Biodegradable

When Mendeleev found elements that didn't fit his pattern of increasing atomic mass, he...

• ...went in the huff and locked himself in his room.

• ...ignored them.

• ...said that their atomic mass had been wrongly calculated.

• ...changed the order he put them into his table.

Mendeleev left gaps in his Periodic Table because...

• ...he said they were for elements that had not yet been discovered.

• ...he didn't really understand enough about the elements.

• ...he was not sure that his theory was correct.

• ...he said that some elements just didn't fit into any pattern.