3. Matter and Energy

In the classification of matter, what term describes a pure substance made of only one kind of atom?

How does an element differ from a compound?

Which statement best describes how an element and a compound differ?

Which component of air is an element (rather than a compound or mixture)?

In the classification of matter, which statement correctly describes water?

Baking soda, also known as sodium bicarbonate (${\mathrm{Na}}_1{H}_1{\mathrm{CO}}_3$), is best classified as which type of matter?

In the classification of matter, how should a dog be categorized?

In the classification of matter, table salt is primarily sodium chloride, $NaCl$. How is table salt best classified?

Within the human body, the most abundant chemical compound by mass is which of the following?

Which of the following best describes a compound in the classification of matter?

In the classification of matter, which is generally easier to separate into its components using physical methods (such as filtration or distillation): a mixture or a compound?

In introductory chemistry, organic compounds are typically defined as compounds that contain which element?

In the classification of matter, baking soda (sodium bicarbonate, $\mathrm{Na}{H}_1{C}_1{O}_3$) is best classified as which of the following?

Which statement best explains the difference between an element and a compound?

In the classification of matter, can a single atom be considered a molecule?