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Evidence to a chemical and physical change "a straight piece of wire is coiled to form a spring
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Evidence to a chemical and physical change "a straight piece of wire is coiled to form a spring

Evidence to a chemical and physical change "a straight piece of wire is coiled-example-1
User JBa
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See when a chemical change happens the color and the look is changed. As when the paper or cardboard which is rough is burned, it changes into smooth black ash.
User Jeremy Fishman
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