Periodic Table STUDY GUIDE - Chemistry

Gases at room temperature (except Br)

Group 1 or IA

Define MALLEABLE

Weighted average of all naturally occurring isotopes

Are there more metals, nonmetals or metalloids on the periodic table?

Ductile

Amount of protons in an element, defines the element

What are transition elements and where are they found in the periodic table?

Who made a table arranged by atomic number and is used today by almost everyone?

What metal element is liquid at room temperature?

Has properties of the other 2 classifications

The Elements name, symbol, atomic number, and atomic mass are included in the elements box.

Periods on a periodic table

Lower melting points

Groups on the periodic table

Groups 3-12 or IB-VIIIB

Found to the right of the zig zag

Left of the heavy zig zag

Semiconductors

Shiny

Who made a list of 33 known elements in the 1700s?

On the heavy zig zag

A periodic repetition of chemical and physical properties of the element when they are arranged by atomic number

Insulators (poor conductors)

Group 17 or VIIA

Group 18 or VIIIA

Good conductor

What two series are at the bottom of the periodic table that didn't fit in the whole table?

Who made a table arranging the elements in order by atomic mass?

Malleable

Group 2 or IIA

Define DUCTILE

Solids at room temperature (except Hg)

The mass number is the amount of particles in the nucleus

Which nonmetal is liquid at room temperature?

High melting points

What are representative elements and where are they found in the periodic table?