RHNC+5.1

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 * 5.1 classifying rock**

Vocabulary

 * texture-** the look and feel of the rocks surface.
 * grains-**rocks that are made up of particles of other rocks or minerals.
 * igneous**-forms from the cooling of molten rock.
 * sedimentary-**forms when particles of other rocks or the leftovers of plants and animals are compressed into each other.
 * metamorphic-**formed when a rock is changed by heat,pressure,or chemical reactions.