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Crystals are solids that are made up of repeating structures. When tiny building blocks, called atoms or molecules, stick together in repeating patterns they form crystals. Different atoms and molecules make different crystals.There are seven basic types of crystal. In a cubic crystal every edge is the same length and each angle is the same size. Other crystal shapes can have edges and angles that are different sizes. Scientists class crystals according to the number of differently-sized edges and angles that they have.
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Try making your own crystal structure at home
Using cocktail sticks or dry spaghetti to represent bonds and raisins or marshmallows to represent the atoms, can you make the structure of a crystal? There are many different shapes that you could make. The important thing is that your crystal structure has a regular pattern.
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[av_heading heading=’NEED TO KNOW: Geologists look at the crystals in rocks to help them understand how the rocks were formed.’ tag=’h4′ style=” size=” subheading_active=” subheading_size=’15’ padding=’10’ color=” custom_font=”][/av_heading]