Periodic Table

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

What category is silicon (Si) a part of?

• Metal

• Nonmetal

• Metalloid

• Halogens

How many valence electrons does a carbon atom have?

• 8

• 4

• 2

• 6

Tags

NGSS.HS-PS1-1

What is group name of the most reactive metals?

• Noble gases

• Halogens

• Alkali metals

• Alkaline earth metals

Which group of the periodic table is composed of inert (not reactive) elements?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Tags

NGSS.MS-PS1-1