Periodic Table

Atomic Mass

100

Atomic mass of Carbon

12.0108

200

Atomic mass of Xenon

131.294

300

Atomic mass of Gold

196.967

400

Atomic mass of Gallium

69.723

500

Atomic mass of Tin

118.711

Vocabulary

100

Atomic Number

The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

200

Proton

A molecule with a positive charge. 

300

Molecule 

A group of atoms bonded together.  

400

Atom

The basic unit of of a chemical element. 

500

Metalloids 

An element whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.

Groups and Periods

100

What element is period 4 and row 1

Potassium 

200

What element is period 2 and row 6

Sulfur

300

What element is period 6 and row 11

Gold

400

What element is period 7 and row 2

Radium 

500

What element is period 5 row 14 

Tin

Symbol

100

Symbol of Mendelevium

Md

200

Symbol of Nobelium

No

300

Symbol of Radon

Rn

400

Symbol of Thulium

Tm

500

Symbol of Holmium

Ho