Difference between compound and mixture the chemical properties of a compound are different from the chemical properties of a mixture because: a. the substances in a compound are chemically joined in a fixed proportion b. the substances in a compound are always composed of at least three different types of atoms c. mixtures are always homogeneous d. the properties of a mixture are different from those of the substances from which it is made

A mixture is formed of two substances (molecules, elements, compounds, etc.) that are not chemically bonded. A compound is formed of two substances chemically joined together, so the answer is A.

c.

explanation:

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.