Periodic Table of Elements

The Modern Periodic Table of Elements is arranged by

• atomic mass

• atomic number

• valence electrons

• number of isotopes

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

Tags

NGSS.HS-PS1-1

In each square of the periodic table, the number at the bottom is the:

• atomic number

• atomic mass

• chemical symbol

• element name

Tags

NGSS.MS-PS1-1

Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

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NGSS.HS-PS1-1

The horizontal rows on the periodic table are called

• groups

• families

• periods

• atomic numbers

On the periodic table, elements on the right side of the "stair-step" line are classified as:

• nonmetals

• metals

• gases

• Halogens

These elements located on the "stair-step" line are sometimes called "semiconductors."

• Metals

• Nonmetals

• Metalloids

• Groups

Tags

NGSS.HS-PS1-1

Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

Tags

NGSS.HS-PS1-1

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1