Periodic table 1

What happens to the number of shells as you move down a group?

• They decrease by 1

• They increase by 1

• Nothing

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

Elements in the same group or column have the same ...

• # of valence electrons

• # of shells

• # of protons

• Mass Number

Rows on the periodic table are called ___________.

• Periods

• Sentences

• Fences

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

found in group one of the periodic table; highly reactive

• Halogens

• Transition Metals

• alkali metals

• metalloids (semimetals)

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

If an atom had the same properties as fluorine (F), it would probably be located in

• period 1.
• period 2.
• group 2.
• group 17.