Which statement best describes a chemical change? O A. A substance changes size or phase.
O B. Atoms are made and destroyed.
O C. The nuclei of atoms are rearranged.
O D. Substances form new substances.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Heat is the total potential energy of a substance that can be transferred. true false

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?