Periodic Table basics

Rows of elements are called ___.

• periods

• groups

• clusters

• levels

Vertical columns on the periodic table are called ___.

• periods

• metals

• metalloids

• groups

What is so special about Mendeleev's table?

• elements are in groups

• elements are in alphabetical order

• undiscovered elements can be predicted

• radioactive elements are at the bottom

How can you find the number of electrons in the outer shell of an element?

• look at the period number

• look at the group number

• look at the atomic number

Tags

NGSS.HS-PS1-1

How many energy shells does lithium (Li) have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

How many energy shells does krypton (Kr) have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

How many electrons are in the outer shell of a carbon (C) atom?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

Letter A in the diagram is pointing to what type of elements?

• metals

• nonmetals

• metalloids

• groups

Tags

NGSS.HS-PS1-1

How are the elements arranged in the periodic table?

• alphabetically

• by increasing atomic number

• by increasing value

• density

The pink area (B) on the diagram contains what type of elements?

• metals

• nonmetals

• metalloids

• liquids

Tags

NGSS.HS-PS1-1