ALKANE
Authored by IZYAN KM-Pensyarah
Chemistry
10th Grade
Used 2+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the general formula for alkanes?
CnH2n
CnH2n-2
CnH2n+2
CnHn+2
Answer explanation
The general formula for alkanes is CnH2n+2. This formula represents that for every carbon atom, there are two hydrogen atoms plus two additional hydrogen atoms.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Name the first four alkanes in the series.
Sodium, Magnesium, Aluminum, Silicon
Carbon, Nitrogen, Oxygen, Fluorine
Hydrogen, Helium, Lithium, Beryllium
Methane, Ethane, Propane, Butane
Answer explanation
The first four alkanes in the series are Methane, Ethane, Propane, and Butane. These are the correct choices.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How do you name alkanes using IUPAC nomenclature?
By counting the number of hydrogen atoms
By identifying the shortest continuous carbon chain
By adding a prefix based on the number of carbon atoms
By identifying the longest continuous carbon chain and adding the appropriate suffix based on the number of carbon atoms.
Answer explanation
Alkanes are named using IUPAC nomenclature by identifying the longest continuous carbon chain and adding the appropriate suffix based on the number of carbon atoms. This ensures accurate naming of the compound.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is structural isomerism in alkanes?
Compounds with different molecular formulas but the same structural arrangement of atoms.
Compounds with the same molecular formula and the same structural arrangement of atoms.
Compounds with different molecular formulas and different structural arrangements of atoms.
Different compounds with the same molecular formula but different structural arrangements of atoms.
Answer explanation
Structural isomerism in alkanes refers to different compounds with the same molecular formula but different structural arrangements of atoms.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Provide an example of two structural isomers of a specific alkane.
2-methylpropane and n-butane
propane and butane
ethanol and methanol
ethane and pentane
Answer explanation
Two structural isomers of a specific alkane are 2-methylpropane and n-butane. These compounds have different arrangements of carbon atoms, resulting in distinct chemical properties.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What are the physical properties of alkanes?
Nonpolar, high solubility in water, high melting and boiling points
Nonpolar, low solubility in water, low melting and boiling points
High solubility in water, high melting and boiling points, polar
High solubility in water, low melting and boiling points, polar
Answer explanation
Alkanes are nonpolar and have low solubility in water, as well as low melting and boiling points. This matches the correct choice.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How do the boiling points of alkanes change with increasing carbon chain length?
Boiling points fluctuate
Boiling points increase
Boiling points remain constant
Boiling points decrease
Answer explanation
The boiling points of alkanes increase with increasing carbon chain length.
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