Asked by bella
is this a chemical or physical change
1. a glowing splint placed in a test tube causes a loud pop
2. food coloring is added to cake icing to make it pink
1. a glowing splint placed in a test tube causes a loud pop
2. food coloring is added to cake icing to make it pink
Answers
Answered by
DrBob222
1. Something must have reacted with the glowing splint to make the pop; therefore, that must be a chemical change.
2. This probably is a physical change. Probably there is no reaction. (I say probably because a change in color does, at times, denote a chemical change. For example, iron(III) ion plus thiocyanate ion produces a blood red color due to the formation of the iron thiocyanate complex ion.)
2. This probably is a physical change. Probably there is no reaction. (I say probably because a change in color does, at times, denote a chemical change. For example, iron(III) ion plus thiocyanate ion produces a blood red color due to the formation of the iron thiocyanate complex ion.)
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