A chemical change occurs when... A the identity of a substance changes but its appearance does not.

B neither the appearance of a substance nor its identity changes.

C both the physical properties of a substance and its identity change.
D
the appearance of a substance changes but its identity does not.

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.

Which of the following is the sl unit used to measure temperature a. kilogram b. liter c. meter d. kelvin