Mixing baking soda and sugar is a physical change. The substances are still sugar and baking soda, just physically mixed together. No new substances are formed.
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Mixing iodine and baking soda is a physical change because the substances are simply being physically combined without forming any new substances.
Mixing baking soda with iodine solution would not cause a chemical change. It would be a physical change where the substances are still present as they were before mixing, and they can be separated.
Mixing water with baking soda is a physical change as it does not alter the chemical composition of either substance. The water may dissolve the baking soda, creating a solution, but the individual molecules of water and baking soda remain the same.
chemical. when a reaction is undertaken that changes the structure of a substance and creates a new substance it is a chemical reaction. a gas is created during the reaction and a new chemical compound (sodium acetate) is left behind leaving neither of the previous elements present.
Mixing salt and water is a physical change, not a chemical change. The salt does not change its chemical composition when it dissolves in water, only its physical state.