Is each of the following a physical or chemical change? ● a puddle evaporating ● adding food coloring to water ● cutting an apple ● denting a piece of metal ● dry ice sublimating ● iron rusting ● limewater (a liquid) and carbon dioxide (a gas) forming chalk (a solid) ● paper burning ● vinegar and baking soda making bubbles ● water boiling pl

a puddle evaporating = physical change

adding food coloring to water = chemical change

cutting an apple = physical change

denting a piece of metal = physical change

dry ice sublimating = I think is chemical change

iron rusting = chemical change

limewater and carbon dioxide forming chalk = chemical change

water boiling = physical change

vinegar and baking soda making bubbles = chemical change

paper burning = chemical change

Your welcome. I do sincerely believe that these are correct.

a non redox reaction occurs when there is not a transfer of electrons. for redox reactions, which are reduction-oxidation reactions, a change in the oxidation number occurs. elements that are reduced gain electrons, and elements that are oxidized lose electrons.

explanation:

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.