Biological Chemistry Review

A substance that contains all the same type of atom is:

• An element

• A compound

• A heterogeneous mixture

• A homogeneous mixture

A substance that is composed of two or more elements chemically combined in an exact proportion:

• An element

• A compound

• A heterogeneous mixture

• A homogeneous mixture

The smallest unit of an element that keeps the same properties of that element is a(n):

• Electron

• Atom

• Molecule

• Compound

Water (H₂O) is an example of a(n):

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Rust (Fe₂O₃) is an example of a(n):

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Glucose (C₆H₁₂O₆) is an example of a(n):

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Carbon (C) is an example of a(n):

• Element

• Compound

• Heterogeneous Mixture

• Homogeneous Mixture

Salt dissolved in water is an example of a(n):

• Solution

• Compound

• Heterogeneous Mixture

• Homogeneous Mixture

Mud and rocks is an example of a(n):

• Element

• Compound

• Heterogeneous Mixture

• Homogeneous Mixture

Air is an example of a(n):

• Element

• Compound

• Mixture

• Solution