Exploring the Periodic Table

What is the name of the chart that organizes all known chemical elements based on their properties?

• The Reactivity Table

• The Periodic Table

• The Atomic Chart

• The Elemental Grid

What is a horizontal row in the Periodic Table called?

• Group

• Family

• Period

• Block

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Shiny (lustrous)

• Dull

Which group on the Periodic Table contains the noble gases?

• Group 1

• Group 2

• Group 17

• Group 18

Which of the following elements is a metalloid?

• Sodium

• Silicon

• Oxygen

• Gold

What trend is observed in the reactivity of alkali metals (Group 1) as you move down the group?

• Reactivity decreases

• Reactivity increases

• Reactivity stays the same

• They become nonmetals

What do elements in the same group (vertical column) of the Periodic Table have in common?

• Same number of protons

• Same number of neutrons

• Similar chemical properties

• Same atomic mass

Which statement best explains why halogens (Group 17) are highly reactive?

• They have a full outer shell of electrons

• They need to gain one electron to achieve a stable configuration

• They are metals

• They have low atomic numbers

How does the reactivity of nonmetals generally change as you move up Group 17 (the halogens)?

• Reactivity increases

• Reactivity decreases

• Reactivity stays the same

• They become metals

A student claims that elements in the same period have similar properties. Use your knowledge of the Periodic Table to evaluate this claim.

• The claim is correct; periods have similar properties.

• The claim is incorrect; groups, not periods, have similar properties.

• The claim is correct; periods have the same number of valence electrons.

• The claim is incorrect; periods are not related to properties.