Periodic Trends

The vertical up and down columns are called

• groups

• periods

• towers

• atomic numbers

The modern periodic table of elements is arranged by...

• atomic mass

• atomic number

• valence electrons

• number of isotopes

which group on the periodic table is composed of inert (not reactive) gases?

• noble gases

• halogens

• alkaline earth metals

• alkali metals

Which is an alkali metal?

• magnesium

• sodium

• iron

• europium

Which is a halogen?

• Helium

• Oxygen

• Chlorine

• Neptune

Elements in a ______ have similar chemical properties.

• perido

• row

• group

• class

The letter "C" is a ____ of carbon

• name

• chemical symbol

• nickname

Which of the following are physical properties of metal?

• Luster (reflective surface)

• conductivity (electricity)

• ductility (able to be drawn on)

• malleability (hammered or pressed)

The reactivity of metals tend to decrease as you move from left to right across the periodic table

• true

• false

Name this group: These metals are most reactive

• alkaline earth metals

• alkali metals

• halogens

• noble gases