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Carbon Chemistry Essentials
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1
Question
What is the primary reason carbon forms a vast number of compounds?
Page 1
Answer
Carbon's ability to form strong covalent bonds with itself (catenation) and other elements due to its tetravalency.
2
Question
Define tetravalency in the context of carbon.
Page 1
Answer
Carbon has four valence electrons, allowing it to form four covalent bonds.
3
Question
What is catenation?
Page 1
Answer
The ability of carbon atoms to form long chains or rings by bonding with each other.
4
Question
Why are carbon compounds generally inert?
Page 2
Answer
They have strong covalent bonds that are difficult to break.
5
Question
Name a property of carbon compounds that makes them suitable for various uses.
Page 2
Answer
They have low melting and boiling points, except for some like diamond and graphite.
6
Question
What type of bond forms between carbon and hydrogen?
Page 3
Answer
Covalent bond.
7
Question
Describe the electron arrangement in methane (\$CH_4\$).
Page 3
Answer
Carbon shares one electron with each of four hydrogen atoms, forming four single covalent bonds.
8
Question
In ethene (\$C_2H_4\$), what is the nature of the bond between the two carbon atoms?
Page 3
Answer
One double bond consisting of one sigma and one pi bond.
9
Question
What is the bond angle in methane?
Page 3
Answer
Approximately 109.5°.
10
Question
Name three allotropes of carbon.
Page 4
Answer
Diamond, graphite, and fullerenes.
11
Question
Describe the structure of diamond.
Page 4
Answer
Each carbon atom is bonded to four others in a tetrahedral arrangement, forming a three-dimensional network.
12
Question
Why is graphite a good conductor of electricity?
Page 4
Answer
It has delocalized electrons in layers that can move freely.
13
Question
What are fullerenes?
Page 4
Answer
Allotropes of carbon where carbon atoms form a spherical or tube-like structure, like buckminsterfullerene (\$C_{60}\$).
14
Question
What enables the versatile nature of carbon?
Page 5
Answer
Tetravalency and catenation.
15
Question
Why can carbon form isomers?
Page 5
Answer
Same molecular formula but different arrangements of atoms.
16
Question
Define saturated carbon compounds.
Page 6
Answer
Compounds where all carbon atoms are linked by single bonds.
17
Question
What are unsaturated carbon compounds?
Page 6
Answer
Compounds with at least one double or triple bond between carbon atoms.
18
Question
Draw the structural formula for ethyne (acetylene).
Page 6
Answer
\$H-C\equiv C-H\$
19
Question
What is the general formula for alkanes?
Page 7
Answer
\$C_nH_{2n+2}\$, where n is the number of carbon atoms.
20
Question
Name the first four alkanes.
Page 7
Answer
Methane (\$CH_4\$), ethane (\$C_2H_6\$), propane (\$C_3H_8\$), butane (\$C_4H_{10}\$).
21
Question
What is the general formula for alkenes?
Page 7
Answer
\$C_nH_{2n}\$.
22
Question
Name the first three alkenes.
Page 7
Answer
Ethene (\$C_2H_4\$), propene (\$C_3H_6\$), butene (\$C_4H_8\$).
23
Question
What is the general formula for alkynes?
Page 7
Answer
\$C_nH_{2n-2}\$.
24
Question
Name the first two alkynes.
Page 7
Answer
Ethyne (\$C_2H_2\$), propyne (\$C_3H_4\$).
25
Question
What are isomers?
Page 8
Answer
Compounds with the same molecular formula but different structural arrangements.
26
Question
Give an example of chain isomers.
Page 8
Answer
n-Pentane and isopentane, both \$C_5H_{12}\$, but different branching.
27
Question
What is a functional group?
Page 9
Answer
A specific group of atoms in a molecule responsible for its characteristic chemical reactions.
28
Question
Name the functional group in alcohols.
Page 9
Answer
Hydroxyl group (-OH).
29
Question
What is the functional group in aldehydes?
Page 9
Answer
Aldehyde group (-CHO).
30
Question
Identify the functional group in carboxylic acids.
Page 9
Answer
Carboxyl group (-COOH).