Columns on the periodic table are called ​ (a)   and rows on the periodic table are called ​ (b)   .

• groups
• periods
• elements
• tables

What is the best definition of Periodic Law?

• There is never any repetition of chemical or physical properties of the elements

• There is periodic repetition of chemical and physical properties of the elements

• There is periodic repetition of atomic numbers of the elements

Mendeleev organized the elements by atomic mass in each of the rows. How are they actually organized?

• Mass Number

• Atomic Number

• Number of Neutrons

• Number of Electron Shells

What is true about a group on the periodic table?

• They have similar electron configurations

• They have similar properties

• They have different properties

• They have the exact same electron configurations

Tags

NGSS.HS-PS1-1

Which of the following is true when going across a period on the periodic table?

• They decrease in atomic number

• They increase in atomic number

• Each element in a period has a similar electron configuration (example all s1)

• Each element in a period has the same number of electron shells.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Match the element to the number of Valence Electrons it has.

• 1

• Magnesium

• 2

• Aluminum

• 6

• Sulfur

• 3

• Argon

• 8

• Potassium

Tags

NGSS.HS-PS1-1

Select the area on the periodic table that represents the lanthanides and actinides

Select the area on the periodic table that represents the Transition Metals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Select the area on the periodic table that best represents the metalloids

Tags

NGSS.HS-PS1-1

Select the area on the periodic table that best represents a group of highly reactive metals.

Tags

NGSS.HS-PS1-1