Compare the modern (electron cloud) model of the atom with dalton’s atomic model. which of these statements describe the two models correctly? check all of the boxes that apply.

dalton’s model was replaced only because of its age.

dalton’s model represented atoms as indivisible, but the modern theory recognizes that they contain smaller particles.

the modern model explains all available data about atoms; dalton’s model does not.

the modern model is more widely accepted because it was proposed by more well known scientists.

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

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

An observation that requires measurement is called quantitative observable or qualitative