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Abdul Hafeez Abdul Hafeez 1y
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What are crystals? A crystal is a solid form of substance. It has a definite shape and a definite number of faces because of the arrangement of its atom. All crystals of the same substance have the same shape though they may differ in size. In nature there are hundred of substance which form crystals.

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  3. What are crystals? A crystal is a solid form of substance. It has a definite shape and a definite number of faces because of the arrangement of its atom. All crystals of the same substance have the same shape though they may differ in size. In nature there are hundred of substance which form crystals.
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