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Your answer is, all of the above.

Chemical Change

A chemical change occurs on the molecular level and produces a new substance. However, a physical change rearranges molecules and does not produce a new substance.

                    10 examples of chemical changes

                      Impacts of Chemical changes

Anytime a new substance is made, a chemical change takes place. Usually two or more materials are combined and a new substance is formed. A chemical change can produce amazing explosions, like fireworks.

Thus, all of the above is the correct answer. Learn more about "Chemical Changes" here

none of the above

Explanation:

deposition (gas to solid), sublimation (solid to gas), evaporation, this all is physical change not chemical change

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: