Elements and Molecules

Atoms, Elements, Molecules, Compounds

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Multiple Choice

What is a small particle that is known as the basic building block of matter?

• molecule

• compound

• element

• atom

Multiple Choice

Two oxygen atoms bond together, which vocabulary word best describes this type of matter?

• molecule

• compound

• element

• atom

Multiple Choice

H₂O is most accurately described as a ___________________.

• molecule

• compound

• element

• atom

Multiple Choice

Which of the following is the most accurate statement?

• everything is both a molecule and a compound

• nothing can be both a molecule and a compound

• all compounds are also molecules

• All molecules are also compounds

Multiple Select

Which vocabulary words can be used to describe this image? (check all that apply)

• molecule

• compound

• element

• atom

Multiple Choice

Which substance is not an element?

• Neon (Ne)

• Oxygen (O₂)

• Carbon dioxide (CO₂)

• Iron (Fe)

Multiple Choice

Oxygen, Nitrogen, Hydrogen, and Calcium are all examples of ______________________.

• molecules

• compounds

• atoms

• elements

Multiple Choice

Which one of the following is a compound?

• NaCl

• O2

• Hydrogen

• He2

Multiple Choice

Which substance is a compound?

• Neon (Ne)

• Oxygen (O₂)

• Carbon Dioxide (CO₂)

• Nitrogen (N₂)

Multiple Choice

What is a substance with unique physical and chemical properties that can't be reduced by chemical means.

• an element

• an atom

• a molecule

• a compound

Multiple Choice

Molecules and compounds are created when multiple atoms bond together, but how are they different?

• Compounds have to have atoms from different elements bonded together

• Molecules have to have atoms from different elements bonded together

• They are the same and there is no difference

• Molecules are building blocks of compounds

Multiple Choice

Which substance is not a molecule?

• Neon (Ne)

• Oxygen (O₂)

• Carbon Dioxide (CO₂)

• Nitrogen (N₂)

Multiple Select

What purpose do molecular models, drawings, and diagrams serve? (check all that apply)

• They allow us visual representations for things we can't normally see.

• They make concepts easier to understand.

• They make concepts more difficult to understand.

• They serve no purpose.

Multiple Choice

Is Sodium (Na) an element or a compound?

• Element

• Compound

Multiple Choice

Are models a perfect representation of the things they depict? Why or why not?

• No, models have limitations and can only effectively represent certain things.

• Yes, models exactly represent the real world.

• Yes, models convey all possible information about the things they represent.

• No, models convey no useful information

Multiple Choice

Is Sodium Chloride (NaCl) an element or compound?

• Element

• Compound

Multiple Choice

What type of model is pictured here?

• space filling model

• ball and stick model

Multiple Choice

Is Iron (Fe) an atom or a molecule?

• Atom

• Molecule

Multiple Choice

Which of these models can be described as a compound?

• water

• carbon dioxide

• amonia

• methane

• All of them are compounds

Multiple Choice

Is Chlorine (Cl₂) an atom or a molecule?

• Atom

• Molecule

Multiple Choice

Which of these is only a molecule and not a compound?

• a

• b

• c

• d

Multiple Choice

Which of the following is different from the rest of the group? (choose the answer that best applies)

Nitrous Oxide (N₂O)

Ozone (O₃)

Carbon Dioxide (CO₂)

Dihydrogen Monoxide (H₂O)

• Ozone (O₃)

• Nitrous Oxide (N₂O)

• Carbon Dioxide (CO₂)

• Dihydrogen Monoxide (H₂O)

Multiple Choice

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0
• 1
• 2
• 3

Multiple Choice

Glucose (C₆H₁₂O₆) is considered a compound because it is made up of two or more

• molecules

• elements

• gases

• soilds

Multiple Choice

Which list of formulas represents compounds, only?

• NaCl, H₂O, CO

• H₂, N₂, O₂

• H₂, Ne, NaCl

• MgO, NaCl, O₂

Multiple Choice

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 6

Multiple Select

Choose all the images that represent compounds.

Multiple Choice

Element or Compound?

• Element

• Compound

Multiple Choice

Element or Compound?

• Element

• Compound?

Multiple Choice

How many elements are in this chemical formula?

HCl

• 1

• 2

• 3

• 4

Multiple Choice

How many atoms are in this chemical formula: Zn(NO₃)₂

• 3

• 6

• 9

• 12

Fill in the Blank

Explain why C₆H₁₂O₆ is a compound AND a molecule, while Br₂ is just a molecule.

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