C1.2.4 Chemical Formulae

What are the two elements that make up carbon dioxide?

• Carbon and Hydrogen

• Carbon and Oxygen

• Oxygen and Nitrogen

• Hydrogen and Nitrogen

How many grams of carbon are in carbon dioxide for every 32 grams of oxygen?

• 12 grams

• 14 grams

• 16 grams

• 18 grams

Which compound has a higher proportion of oxygen, water or nitrogen dioxide?

• Water

• Nitrogen Dioxide

What is the learning objective related to chemical names?

• Write chemical names for some simple compounds

• Write chemical names for all compounds

• Write chemical names for elements

• Write chemical names for mixtures.

Which of the following is a compound? (Two correct answers)

• Carbon Dioxide

• Oxygen

• Water

• Hydrogen

Fill in the blank: Every cell in your body makes ______.

• A) Carbon Dioxide

• B) Carbon Monoxide

• D) Nitrogen

Fill in the blank: The compound with one atom of sodium and and one atom of chlorine is called ________.

• Sodium oxide

• Sodium chloride

• Sodium dioxide

• Sodium monoxide

Which of the following is a chemical formula?

• H2O

• CO2

• NaCl

• All of the above.

Fill in the blank: The chemical formula of water is ________.

• H2O

• CO2

• NaCl

• H2

Fill in the blank: A chemical formula shows the relative number of atoms of each ________ in a compound.

• Element

• Molecule

• Compound

• Mixture