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Make up the questions using the words given and 3 questions of your own. Present them in the form of a dialogue with your partner.
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| mechanism, reaction, is, what? |
| basic, what, are, reaction types? |
6. Read the 10 facts about carbon and match the two parts of each statement. What is the meaning of the words in bold?
| 1. Carbon is the basis for organic chemistry | a.as it occursin all living organisms. |
| 2. Carbon is a nonmetal that can bond with itselfand many other chemical elements, | b.or one of the softest (graphite). |
| 3. Elemental carboncan take the form of one of the hardest substances (diamond) | c.though it was not produced in the Big Bang. |
| 4. Carbon is made in the interiors of stars, | d.and has been known since prehistoric time. |
| 5.Carbon compounds have limitlessuses. In its elemental form, diamond is a gemstoneand used for drilling/cutting; graphite is used in pencils, as a lubricant, and to protect against rust; | e.forming nearlyten million compounds. |
| 6. Carbon has the highest melting/sublimation point of the elements. The melting point of diamond is ~3550°C, | f.hydrogen, helium, and oxygen are found in higher amounts, by mass. |
| 7. Pure carbonexists free in nature | g.although inhalation of fine particles, such as soot, can damage lung tissue. |
| 8.The origin of the name 'carbon' comes from the Latin word carbo, for charcoal. | h.The German and French words for charcoal are similar. |
| 9.Pure carbon is considered non-toxic, | i.while charcoal is used to remove toxins, tastes, and odors. |
| 10.Carbon is the fourth most abundantelement in the universe | j. with the sublimation point of carbon around 3800°C. |
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