Periodic Trends

Periodic Trends

The Elements in the Periodic Table are divided into 3 main classes of elements

• Metals (pink)

• Non-metals (blue)

• Metalloids (green)

Metals are

• in groups 1-12 (in general)

• are shiny

• are ductile

• are conductive

• are maleable

Non Metals are

• in Groups14-18 (but only right of the zig-zag) + Hydrogen

• are dull

• are brittle

• are insulators

• 
  

Metalloids

• are found along the "stair-step"

• have characteristics between metals and non-metals

• are semi-conductors

• 
  

Multiple Choice

The periodic table is broken into 3 groups

• metals, metalloids, non-metals

• atoms, ions, compounds

• protons, neutrons, electrons

Multiple Choice

As you move down the periodic table, atoms

• lose electrons

• gain electrons

Multiple Choice

In the middle of the periodic table, the valence numbers

• are always positive numbers

• are always negative numbers

• are more variable

Multiple Choice

Elements in Group one have a valence number of

• +1

• +2

• -1

• -2

Multiple Choice

Elements in group 8

• are inert

• have a valence number of 8

• have a full outer shell

• all of the others

Multiple Choice

Elements in group 17 gain a charge of ______________ when they gain an extra electron

• +1

• -1

• +2

• -2

Multiple Select

Alkali metals (check all that apply)

• have a valence number of +1

• are so reactive that they react explosively

• are in group 1 of the periodic table

• readily give away their 1 valence electron

Multiple Select

Elements in the halogen group (check all that apply)

• are in group 7

• have a valence of +1

• can typically accept 1 electron

• are inert

Multiple Select

Elements are stable when (click all that are correct)

• they have a full outer shelll

• they have 8 (or 2) electrons in their outer shell

• they need only 1 electron

• they can donate 1 electron

• they are in the middle of the periodic table

Multiple Select

Carbon (click all that apply)

• has a valence number of +4

• can share 4 electrons making 4 covalent bonds

• is in group 14

• wants to give away its 4 electrons

Poll

Using the Periodic Table

• Is fun and easy!

• Is difficult, but I'll get the hang of it.

• Is so confusing I don't even want to try.