Exploring Metals, Nonmetals, and Metalloids in Chemistry

How many elements in the universe are classified as metals?

• 118

• 20

• 92

• 6

Which of the following elements is a metalloid?

• Oxygen

• Silicon

• Iron

• Sodium

What is the physical state of most metals at room temperature?

• Gas

• Liquid

• Plasma

• Solid

Which property is NOT associated with metals?

• Brittle

• Good conductors of heat and electricity

• Malleable

• High melting points

What does it mean when a metal is described as ductile?

• It can be bent into different shapes

• It can be drawn out into wires

• It is a good conductor of electricity

• It has a high melting point

Which of the following is a property of metalloids?

• They are insulators

• They are brittle

• They are malleable

• They are liquid at room temperature

Metalloids are generally good conductors of:

• Both heat and electricity

• Electricity

• Heat

• Neither heat nor electricity

Which of the following is NOT a property of non-metals?

• Dull appearance

• Brittle

• Good conductors of heat and electricity

• Lower melting points than metals

At room temperature, non-metals can exist in which states?

• Liquid and gas only

• Solid, liquid, and gas

• Solid and liquid only

• Solid and gas only

Tags

NGSS.MS-PS1-4

Which of the following is an example of a non-metal?

• Magnesium

• Carbon

• Silicon

• Aluminum