JC - Periodic Table

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

As you move left to right on a row or period what happens?

• Atomic number increases by 1

• Electrons decrease

• Number of shells decrease

• Nothing

All elements in the same row have the same number of shells.

• True

• False

• Sometimes

The columns in the periodic table are called ___________.

• Towers

• Herds

• Groups

Elements in the same group have __________

• Similar Properties

• Same number of shells

• Similar Mass

Which family of elements reacts violently with water and exposure to oxygen?

• alkali metals

• alkaline earth metals

• lanthanides

• actanides

• transition metals

Tags

NGSS.MS-PS1-2

The periodic table is mostly comprised of what type of element?

• Metals

• Nonmetals

• Metalloids

Tags

NGSS.HS-PS1-1

Which family of elements does not combine with other elements unless under special conditions in a laboratory?

• Noble gases

• Halogens

• Metalloids

• Alkaline earth metals

• Actinides

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

Tags

NGSS.HS-PS1-1

Pure forms of these elements are stored in oil so they won't react with oxygen and water in the air.

• Alkali Metals
• Alkaline-earth metals
• Halogens
• Noble Gases