Exploring Element Classes in the Periodic Table

Which element is an exception to being a metal on the left of the stair-step line?

• Oxygen

• Hydrogen

• Helium

• Carbon

What property allows metals to be hammered into thin sheets?

• Ductility

• Malleability

• Conductivity

• Elasticity

Which of the following is a characteristic of nonmetals?

• Good insulators

• High density

• Malleable

• Shiny

What is a common property of metalloids?

• High density

• Always dull

• Electrical semiconductors

• Always shiny

Which group on the periodic table contains the alkali metals?

• Group 18

• Group 17

• Group 2

• Group 1

What is a notable property of alkaline earth metals?

• Low melting points

• Form strong acids

• Always gases

• Highly reactive with water

Transition metals are known for forming what type of compounds?

• Colored compounds

• Colorless compounds

• Non-reactive compounds

• Gaseous compounds

What is a unique property of noble gases?

• Form diatomic molecules

• Highly reactive

• Chemically inert

• High density

Which element is part of the lanthanide series?

• Cerium

• Neptunium

• Uranium

• Plutonium

What is a common property of actinides?

• Highly electropositive

• Low density

• Non-radioactive

• Non-reactive