Lava This is molten rock that is on the surface of the Earth. It flows from volcanoes. Molten rock insode the Earth is called magma.
Limestone A form of sedimentary rock. It is made from the compacted bony remains of dead sea creatures. It is mostly calcium carbonate.
Limewater This is known mainly as the test for carbon dioxide gas. Limewater is a clear (not cloudy), colourless (not coloured) solution of calcium hydroxide. If carbon dioxide is present, the limewater forms a white precipitate of calcium carbonate.
Interetingly, if a lot of carbon dioxide is used, the limewater milkiness fades (because calcium hydrogen carbonate is formed which is soluble).
Liquid A stae of matter. It has a fixed volume but no fixed shape.
Loam A type of soil. It is a good mixture of sand, clay and humus. Gardeners try to make their soil a good loam so that their plants grow well.
Low-alloy steel Some steels contain only a small amount of other elements (<5%) but it is enough to modify the properties to fit the requirement.
Low boiling point A substance with a low boiling point has only weak forces between its particles. It turns into a gas at fairly low temperatures. Remember that its boiling point might be so low that it boils below room temperature.
Low melting point A substance with a low melting point has only weak forces between its particles. It turns into a liquid at fairly low temperatures. Remember that its melting point might be so low that it melts below room temperature.
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