Periodic Table Quiz

The noble gases have ____ electrons in their outer energy levels.

• few
• about a half-complete set of
• an almost complete set of
• a complete set of

Tags

NGSS.HS-PS1-1

Elements in a family or group in the periodic table often share similar properties because...

• they look alike.
• they are found in the same place on Earth.
• they have the same physical state
• their atoms have the same number of electrons in their outer energy level

Alkali metals are the most reactive of all the metals because they have ____ electron(s) in their outer energy level.

• 1
  
• 2
• 7
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following are properties of alkali metals?

• brittle (hard), very reactive

• shiny, soft, reactive

• unreactive, not shiny

• somewhat shiny, brittle (hard)

Why is hydrogen placed above Group 1 in the periodic table?

• Like Group 1 metals, hydrogen is a metal soft enough to be cut with a knife.
• Like atoms of Group 1 metals, hydrogen atoms have only one electron in their outer level.
• Hydrogen has the same atomic mass as Group 1 metals.
• Hydrogen has the same density as Group 1 metals.

Tags

NGSS.HS-PS1-1

Electrons are found in the third energy level for which of the following elements:

• Hydrogen

• Aluminum

• Boron

• Lithium

Tags

NGSS.HS-PS1-1

T or F: Elements in the 18th column are unreactive.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Valence electrons are...

• the total number of electrons in an atom

• the number of electrons on the first energy shell of an atom

• the number of electrons on the outermost energy shell of an atom

The ______ tells you how many valence electrons an atom has.

• group number

• period number

The ______ tells you how many energy shells an atom has.

• group number

• period number