Give 4 characteristics of physical changes according to class 6
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Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
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Melting, freezing, tearing, and bending, are all physical changes that change a substance's appearance but not its chemical properties. ... A chemical change is permanent. A new substance is formed. Forms of energy, such as heat, light or electricity, may be emitted or absorbed during a chemical reaction.
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