Quiz on the Periodic Table

Choose the correct answer using the periodic table for the element O.

• Na and Ca

• Na and Cl

Why do atoms want 8 valence electrons?

• 8 valence electrons helps atoms dissolve in water.

• In nature, 8 is the number at which all matter is most happy.

• 8 valence electrons make the atom better able to react with other elements.

• 8 valence electrons is a full shell which makes the atom more stable.

Drag and drop the terms where they are labeled on the atom.

• proton

• electron

• neutron

• nucleus

• electron cloud

__________ are the most reactive metals, especially with water. Select the best answer.

• Metalloids

• Halogens

• Alkali metals

• Noble gases

Choose the correct answer using the periodic table for the element O.

• True

• False

Which element is the least chemically reactive?

• Xe

• Rb

Select the best answer. Elements that are good semiconductors and have properties between metals and nonmetals are called ________________.

• metals

• metalloids

• halogens

• nonmetals

Select the best answer. Looking at the diagram, how many valence electrons does Li have?

• 0

• 2

• 3

• 1

Type the correct answer using the periodic table for the element O: Is it a metal, metalloid, or nonmetal?

• metal

• metalloid

• nonmetal

Select the best answer. The ability to measure how strong an atom attracts electrons when the atom is part of a compound is called __________.

• halogens

• nonmetals

• electronegativity

• metals