rocks and minerals
by Kevin Msni

1. rocks
1.1. sedimentary rocks
1.1.1. sediments glued together
1.1.1.1. types: clastic, chemical,organic
1.1.1.2. eg: limestone, breccia, sandstone
1.2. metamorphic rocks
1.2.1. formed by heat that causes crystals to expands
1.2.1.1. eg:marble, gneiss,phyllite
1.2.2. types: formed by heat, formed by pressure
1.3. igneous rocks
1.3.1. formed from cooling lava
1.3.1.1. eg: granite, basalt, diorite
1.4. uses: used in masonry work, used as aggregates in concreate, limestone is used in the making of cement, some are used for water and sewage treatment.
2. minerals
2.1. atom(protons & neutrons
2.1.1. elements(smallest particle is an atom)
2.1.1.1. molecules( combinations of atoms)
2.1.1.1.1. compound: combinations of elements
2.1.1.2. eg: sodium, chlorine