Chem quiz 2

What does the prefix mono- mean?

• one

• two

• three

• multiple

This forms when two or more different elements chemically combine.

• monoatomic elements

• diatomic element

• compound

This forms when two of the SAME element combine to form a molecule.

• monoatomic element

• diatomic molecule

• compound

This forms when one element is stable enough to stand alone without bonding to another element.

• monoatomic element

• diatomic molecule

• compound

Which of the following is an example of a compound?

• Ne

• C₆H₁₂O₆

• H₂

• O

Which of the following is an example of a diatomic molecule?

• NaCl

• H₂

• C₆H₁₂O₆

• H₂O

Which of the following is an example of a monoatomic element?

• Xe

• Ne

• Ar

• All of the above

Which of the following is an NOT an example of a compound?

• N₂O

• N₂

• NaCl

• Al₂O₃

How is a compound different from an element?

• A compound occurs naturally while an element is made in a lab

• A compound is made of more than one type of atom, while an element is composed of the same type of atom

• A compound can only be a solid and an element can only be a gas

• A compound has more than one bond between atoms, while an element only has one bond

The chemical formula for calcium carbonate is CaCO_3. How many oxygen atoms are in calcium carbonate?

• 1

• 2

• 3

• 5