Distinguish between chemical changes and physical changes;
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chemical change change that is permanent burning of paper
Temporary change change that is temporary such as melting of wax
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Key Points
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products. chemical changeA process that causes a substance to change into a new substance with a new chemical formula.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products. chemical changeA process that causes a substance to change into a new substance with a new chemical formula.chemical reactionA process involving the breaking or making of interatomic bonds and the transformation of a substance (or substances) into another.
Key PointsPhysical changes only change the appearance of a substance, not its chemical composition.Chemical changes cause a substance to change into an entirely substance with a new chemical formula.Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products. chemical changeA process that causes a substance to change into a new substance with a new chemical formula.chemical reactionA process involving the breaking or making of interatomic bonds and the transformation of a substance (or substances) into another.physical changeA process that does not cause a substance to become a fundamentally different substance.
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