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. (please ASAP) A. Dalton’s model was replaced only because of its age. B. Dalton’s model represented atoms as indivisible, but the modern theory recognizes that they contain smaller particles. C. The modern model explains all available data about atoms; Dalton’s model does not. D. The modern model is more widely accepted because it was proposed by more well known scientists.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).