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*If the reaction of burning magnesium is a chemical change, then we should be able to see a change in color, smell, or any other properties of a chemical change (the substance should change). Discussion. Results/Pictures. Identifying a Physical or Chemical Change in Burning Magnesium. Methods. * Materials used.
A physical change alters the form of a substance, but does not change it to another substance. What is a Chemical Change? When a substance undergoes a chemical change, it is changed into a different substance with different properties. 5 Signs of a Chemical Change Color Change Precipitation Precipitation Precipitation â the solid that forms from a solution during a chemical reaction.