Which choice is not an example of a molecule?
a
O NC13
OF
O H202
O 03

Describe the interaction that occurs between two objects with the same electrical charge.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element