3. Matter and Energy

Which statement best describes an element in the classification of matter?

Aluminum foil is primarily made of aluminum metal. In the classification of matter, aluminum is best classified as which of the following?

In the classification of matter, what is the smallest unit of a chemical compound that still retains the compound’s chemical properties?

In the classification of matter, organic compounds are defined as carbon-containing compounds. All organic compounds contain which element?

Which of the following substances is an organic compound?

In the classification of matter, how does a compound differ from an element?

Classify each of the following as a pure substance or amixture: c. ice (H₂O)

In the classification of matter, pizza is best described as which type of substance?

In introductory chemistry, organic compounds are typically defined by the presence of which element?

In the classification of matter, what is the smallest unit of a compound that still retains the compound’s chemical properties?

In the classification of matter, organic compounds are defined by the presence of which element?

In the classification of matter, can an element be broken down into a simpler substance by chemical means?

In the classification of matter, which statement best defines a compound?

In the classification of matter, how should black coffee (filtered, unsweetened) be classified?

In the classification of matter, an atom combines with other atoms to form a molecule; by analogy, a letter combines with other letters to form a(n) _____.