Which of the following postulates of John Dalton's modern atomic theory, published in 1800, is now known to be incorrect?

a. All atoms of a particular element are identical.
b. All matter is composed of tiny particles called atoms.
c. Atoms cannot be created or destroyed during chemical reactions.
d. Chemical compounds are combinations of elements in fixed ratios.
e. Atoms of different elements are different in some fundamental way(s).

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: