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3
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Crystals break smoothly along the line where the bonds between atoms are the _________________.
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4
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______________ crystals are thin and spiky.
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5
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_____________ crystals have a square shape.
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9
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Salt _____________ are cubed.
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1
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Scientists use special ____________ machines to look inside crystals.
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2
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Crystals come in ____________ shapes with sharp straight edges and smooth sides or faces.
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6
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Crystals are always solid and never ______________.
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7
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As the material get cooler the ______________ of the crystal build up.
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8
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Material is __________ until it melts.
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10
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The more_______________ the material cools, the larger the crystals will be.
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