NOW ANSWER THESE
In which forms do we find carbon in our surroundings?
What is allotropy?
Write two uses of diamond?
Write the methods of preparation of
(a) Wood charcoal (b) Lamp black (Kajal).
Answers
1. Carbon is found on Earth in the form of three different allotropes including amorphous, graphite, and diamond. Allotropes are materials made from the same element, but their atoms fit together differently. Each allotrope of carbon has different physical properties.
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2. the ability that certain substances have to exist in more than one physical form
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3. Uses of Diamond in Jewellery
They are used in jewellery (such as earrings, nose rings, engagement rings, pendants, etc.) due to their shiny lustre and their durability. They are used in making jewellery because of their durability and lustre property
Uses of Diamond in Industry
Diamonds are used for industrial purpose. Its property of hardness is useful to drill, grind or cut materials. Hence, some blades used for cutting and drills in the industry used diamonds. They are present on the edges and tips in small sizes.
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4. (a) Wood charcoal is mostly pure carbon, called char (the first syllable of charcoal), made by heating wood above 400° C in a low oxygen environment. The process, called pyrolysis, can take days and burns off volatile compounds such as water, methane, hydrogen, and tar.
(b) Lampblack is soot which can be produced by burning oil in a lamp. Soot can also be produced by burning of a multitude of other fuels such as gas, fats, asphalt, paraffin, and resins.
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Answer:
1.-carbon occurs in The crust of earth in the form of carbonates in such rocks as marble, limestone and chalk
2.-b) the ability that certain substances have to exit in more than one physical form.
c) the most common uses for diamonds outside fine jewellery for industrial application. because diamonds are so strong, they are extremely effective and at polishing cutting drilling.
uses for or diamond are gemstones industrial abrasives diamond, heat sinks etc