Identify the statements that are consistent with the law of conservation of mass. a. New elements are produced using chemical reactions.
b. All samples of a given chemical compound consist of the same elements in the same proportion.
c. In a chemical reaction, the atoms of the reactants rearrange to form new compounds.
d. Chemical reactions neither create nor destroy mass in an isolated system.
e. The mass of the products in a chemical reaction are typically greater than the mass of the reactants.

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

How are elements arranged in a periodic table

What happens when light is scattered?