different rocks

Usually gray or black

Are formed when magma comes out of the core and cools.

unlike most rocks, there is only one specific type of igneous rock that will fizz when in contact with hydrochloric acid(Hl)

These rocks can be all colors except purple and have distinct layers.

are formed with rock chips, bones, water, erosion, clay, and time.

are often found in Utah(where I live) and other states that used to be underwater.

almost all rocks that are sedimentary will fizz when in contact with Hl

they are in all different colors

they are formed under intense heat and pressure

they have crystals in them sometimes

only some metamorphic rocks react to Hl