Elements

What is the chemical symbol for the element hydrogen

• H
• He
• h
• he

What is the chemical symbol for the element Silicon

• S
• Si
• si
• Sl

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

The phases of the moon are __________ because they repeat in a pattern.

• periodic
• group
• awesome
• halogens

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

What does the C represent?

• atomic mass
• atomic number
• element name
• chemical symbol