limestone

What is the chemical formula of calcium carbonate

• Ca₂CO₃
• Ca(CO)₃
• CaCO₃
• CaCO

What type of rock is limestone?

• lime

• non-porous

• sedimentary

• physical

What evidence is there that limestone is this type of rock?

• made of soil

• made of fossils/sediments

• made of salt

• made of carbon dioxide

Which two of these statements is correct?

• limestone is Crystalline

• limestone is porous

• limestone is living

• limestone is fragmental

The following are Limestone characteristics

• Remains of organic matter

• Dark colour

• Cracks and joints

• Iron fragments

How are stalactite formed

• This is a deposition from the outside that runs down the side of the cave and drips onto the floor of the cave

• As moisture drips from the roof of the cave and dries the precipitate left behind builds up farming a pointy deposit on the roof of the cave

• Precipitate comes up from the floor of the cave and runs up to the roof, when it dries the remains hang from the roof of the cave

• As moisture drips from the roof of the cave it drips onto the floor of the cave and builds up over time. Forming a pointed mound on the floor of cave

Stalagmite is formed when

• Water drips onto the floor flows around and hardens

• Water enters the cave and sprays up and down and freezes on the roof of the cave

• Moisture seeps from the floor of the cave leaving a precipitate that builds up and forms a mound on the floor of the cave over time

• Moisture from the roof of the cave drips to the floor and over time the build up of the precipitate forms a mound on the floor of the cave.

Limestone is composed mainly of a mineral called calcium carbonate.

• True

• False

Limestone is an impermeable rock.

• True

• False

Limestone can be slowly dissolved by rainwater or groundwater.

• True

• False