When a chemical change occurs, the substance itself stays the same.
True or False?

false

Explanation:

the substance will always change during a chemical change

c is the answer because when something is left after something evaporates that shows the chemical change.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".