In the process of cooking, making tea, or mixing paint, you combined substances. Sometimes, the act of mixing substances results in the formation of new substances. If two substances mix and one or more new substances form, a chemical change has occurred. Which event do you think results in a chemical change?

A.
Oil and vinegar mix to make salad dressing.

B.
Copper and zinc mix to make brass.

C.
Salt and water mix to make salt water.

D.
Sugar and water mix to make sugar water.

B.

Copper and zinc mix to make brass.

Explanation:

This is the only answer in which a new substance is created, the rest of the choices are just mixtures

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.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.