Periodic Table and Trends

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

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

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

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

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Elements in a ..................have similar chemical properties.  

• period
• group
• row

The letter, C, is a ... of carbon.

• Name

• Nickname

• Chemical Symbol

• Pseudonym

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

• True

• False

Name this group: These metals are the most reactive.

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Name this group: These metals are the second most reactive.

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