Science Tek

Columns on the periodic table are called ______________.

• groups

• lines

• periods

• rules

Rows on the periodic table are called ______________.

• groups

• lines

• periods

• rules

Which two elements are in the same period?

• Boron and Carbon

• Potassium and Sodium

• Lithium and Magnesium

• Zinc and Nitrogen

An atom has 18 protons and 8 valence electrons. Which statement would best identify this element?

• The element is "happy" or stable because its outer energy level is filled.

• The element has an atomic mass of 18.

• The element is highly reactive with eight electrons in its outer shell.

• The element is a metal.

Which two elements would have the same number of energy levels (shells)?

• Nickel and Palladium

• Magnesium and Lithium

• None of these elements

• Copper and Zinc

Identify number 14 on the periodic table square below.

• atomic mass

• chemical symbol

• atomic number

• element name

Identify number 15 on the periodic table square below.

• atomic number

• element name

• atomic mass

• chemical symbol

Identify number 16 on the periodic table square below.

• atomic mass

• element name

• chemical symbol

• atomic number

Identify number 17 on the periodic table square below.

• atomic mass

• atomic number

• chemical symbol

• element name

Determine which atom is being described here: Shiny, has the properties of both metals and nonmetals, and has three valence electrons.

• Tin (Sn)

• Boron (B)

• Germanium (Ge)

• Antimony (Sb)