Properties, Atoms, and Elements

Which of the following is a physical property of sodium?

• Reacts with water
• bonds with Chlorine
• soft (cut with knife)
• oxidizes when exposed to air

Which substance is composed of two or more atoms?

• water
• aluminum foil
• oxygen gas
• helium 

What is the main reason metals, such as copper, are used as wires?

• They are ductile
• It is shiny 
• It is reactive
• It is a liquid

The elements on the right side of the Periodic Table are what type?

• Metals
• Metalloids
• Non-Metals

Mass?

• 13
• 26.982
• Al
• Aluminum

atomic number?

• 13
• 26.982
• aluminum
• Al

What partictle type can be identified as being from a specific element?

• electron
• atom
• electrons
• compound

How many atoms in this molecule?

• 4
• 3
• 2
• 1

What are the neutral charged particles of an atom called?

• protons

• neutrons

• electrons

• quarks

What are the negatively charged particles in an atom called?

• Proton
• Neutrons
• Electrons