Periodic Tables + more :)

Elements are grouped into three classes. These are:

• Periods, groups, metals

• Groups, families, periods

• Metals, Non- Metals, and Metalloids

• Transferable elements, metals, representative elements

Moving left to right across a period elements become:

• less metallic and more nonmetallic 

• more metallic

• the same thing

• similar properties

Properties of metals include: (choose more than one)

• good conductors of heat and electricity

•  higher luster or sheen

• poor conductors of heat

• solid at room temperature with the exception of mercury

Metals can be drawn into wires and are malleable (can easily be shaped )

• True

• False

Nonmetals are good conductors of heat 

• True

• False

Group 1A includes:

• Halogens

• metalloids

• alkaline earth metals

• alkali metals

Group 2A includes:

• Alkaline earth metals

• Alkali metals

• Halogens

• Helium

Group 7A includes:

• hydrogen

• Halogens

• Alkaline earth metals

• alkali metals

Atomic size is How big an atom is as measured by its radius

• True

• False

What are the trends in periodic tables? (choose more than one)

• can't think, brain not braining

• ↓group  ↑atomic size

• R->L Period decrease in atomic size

• L-> R period  ↓atomic size