9198426
Description
Flashcards by Bilal Khan, updated more than 1 year ago
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Created by Bilal Khan
over 8 years ago
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| Question | Answer |
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Images (image/jpeg)
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| What are rocks made of? |
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| What is a mineral? |
Naturally-formed solid substance with a crystal structure
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| Examples of some minerals | |
| What are ores? | Rocks that contain valuable minerals like iron or copper. |
| Examples of ores |
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| Main properties of minerals |
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| What is hardness? | A measure of the ability to scratch or be scratched by other minerals. |
| How is hardness assessed? | By comparing minerals using the mohs scale. |
| What is the mohs scale? | A scale of used in mineralogy to see a minerals hardness. Its degrees, in increasing hardness, are: talc 1; gypsum 2; calcite 3; fluorite 4; apatite 5; feldspar 6; quartz 7; topaz 8; sapphire 9; diamond 10. |
| 3 ways mineral can be analysed | By color, by lustre and by the streak. |
| What is lustre? | How shiny a mineral is. |
| What is streak? |
The color left behind when you try to scratch an unglazed white tile with the mineral.
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| Another example of a streak test |
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| What is the compound put in this flame? | Sodium!!! |
| What about this flame? | Calcium!!! |
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And this flame?
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Barium (image/gif)
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Barium!!! |
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And finally this flame?
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Potassium!!! |
| The End |
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