Periodic Mastery

Group (families): ___________________________________________

• Are Horizontal

• Are verticle

Elements in the same group ___________________________________________

• are all metals
• have similar chemical properties
• have different atomic masses

But they do have ___________________________________________

• a sense of humor

• a lot of money

• a strong opinion

• a unique perspective

Tags

NGSS.HS-LS3-1

Elements in the same period have the same number of ________________________.

• electron shells

• protons

• neutrons

• valence electrons

They are ____________________________, which means they normally do not conduct electricity but will conduct at ___________________________________________ ___________________________________________________________________________________________

• Semiconductors, will conduct at high temperatures or when subjected to a strong electric field.

• conductors, electricity but will not conduct at low temperate

• semiconductors, electricity regardless of temperature.

• superconductors, w electricity without resistance at room temperature.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Where are the metals located on the Periodic Table?

• On the left side

• On the right side

• In the middle

• At the bottom

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Malleable

• Non-ductile

Why does atomic size decrease as you go from left to right across a period?

• Increased nuclear charge pulls electrons closer

• Decreased nuclear charge allows electrons to spread

• Addition of electron shells increases size

• Electrons are lost, reducing size

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Circle the element in each of the following pairs with the larger atomic radius (size): a) Fluorine or Iodine

• Fluorine

• Iodine

Tags

NGSS.HS-PS1-1

This is due to the fact that the electron being removed is an ___________________________ ____________________________________________________________.

• inner-shell electron

• outer-shell electron

• valence electron

• free electron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2