Periodic Table

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

• groups

• towers

• periods

• atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

What does the 6 represent?

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

Tags

NGSS.HS-PS1-1

What does 12.011 represent?

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

Tags

NGSS.HS-PS1-1

What does the C represent?

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

Tags

NGSS.HS-PS1-1

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

• groups

• families

• periods

• atomic numbers

An atom has 10 protons and 8 valence electrons. Which statement would best identify this element?

• The element has an atomic mass of 10.

• The element is highly reactive with 8 valence electrons in its outer energy level.

• The element is stable with 8 valence electrons in its outer energy level.

• It is a metal.

Determine which atom is being described: Colorless gas, poor conductor of electricity, 5 valence electrons, not ductile, 2 energy levels.

• Strontium (Sr)

• Nitrogen (N)

• Oxygen (O)

• Nickel (Ni)

Which two elements have the same number of energy shells (levels)?

• Potassium (K) and Antimony (Sb)

• Barium (Ba) and Calcium (Ca)

• Hydrogen (H) and Helium (He)

• Argon (Ar) and Iodine (I)