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What is minerals?
Minerals are non-living, solid substances that occur naturally.
What are the examples of mineral?
Salt, gold, lead, diamond
Minerals are non-living things, we call them *****
inorganic
Minerals are identified by their P *** P***. They come in different s****, c*****, h*******,h********
physical properties. shapes, colours, hardness, heaviness, lustre (glossyness)
Rocks are made of ****** which can be made up of one or many ********.
minerals
From rocks, we mine minerals. How do we use them?
Food, jewellery, tools.
The moths scale of hardness is tool used to .....................
measure the hardness of mineral.
Pyrites looks and feels like real gold. A mineralogist can tell the difference by looking a special properties.
Gold is much heavier and harder to scratch. When rubbed on procelain, pyrite leaves a balck streak of powder where as gold leaves a yellow strike.
****** does not have a hardness rating because of its unusual charateristic of being liquid at room temperature.
Mercury
Minerals are solid, inorganic and natural. Explain two more characteristics of minerals
They have a definite chemical composition and a crystalline structure
What is a "mixture of different minerals"?
a rock
What is the "streak" of a mineral?
Streak is the color left behind when mineral is scratched against a porcelain tile.
What is "luster"?
How shiny a mineral is
What is the hardness of the mineral?
the resistance of a mineral to being scratched
What scale measures the hardness of a mineral?
The Mohs Hardness Scale
What's the highest hardness on Mohs Hardness scale?
10 Diamond
