Classification of the Elements

Sodium (Na) is found in period 

• 3

• 2

• 4

• 1

What does the 6 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

What does the C represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

From the table below, determine the atomic number of the noble gas at the end of period 5.

• 18

• 36

• 54

• 52

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• Sugar

• Salt

• Water

• Oxygen

This could be the dot diagram of

• Mg

• Cl

• C

• O

Tags

NGSS.MS-PS1-1

What does 12.011 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

What element, based on the subatomic particles in the atom, is shown?

• Beryllium

• Helium

• Lithium

• Oxygen

Tags

NGSS.MS-PS1-1

How many valence electrons are found in atoms of group 15?

• 4

• 5

• 2

• 3