Periodic Table

These are found on the Periodic Table.

• Compounds

• Elements

• Mixtures

• Cells

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

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

• groups

• periods

• atomic numbers

• towers

Sodium (Na) is found in group

• 1

• 2

• 3

• 4

The horizontal rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

Sodium (Na) is found in period

• 1

• 2

• 3

• 4

What does the C represent?

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

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 

The atomic number of an element indicates the number of _____ in the nucleus of an atom of that element.

• protons

• neutrons

• electrons

• isotopes