闪卡自测
What does saturated mean?
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闪卡 1
问题
What does saturated mean?
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答案
Saturated means the compounds only have single carbon-carbon bonds, with no double bonds.
闪卡 2
问题
What is the general formula of an alkane?
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答案
The general formula of an alkane is CnH2n+2.
闪卡 3
问题
True or False? Alkanes are reactive compounds.
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答案
False. Alkanes are generally unreactive compounds.
闪卡 4
问题
What is the name and molecular formula of the alkane containing one carbon atom?
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答案
The name and molecular formula of the alkane containing one carbon atom is methane and CH4.
闪卡 5
问题
What is the name and molecular formula of the alkane containing two carbon atoms?
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答案
The name and molecular formula of the alkane containing two carbon atom is ethane and C2H6.
闪卡 6
问题
What is the name and molecular formula of the alkane containing three carbon atoms.
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答案
The name and molecular formula of the alkane containing three carbon atom is propane and C3H8.
闪卡 7
问题
What is the name and molecular formula of the fourth alkane?
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答案
The fourth alkane is butane, with the molecular formula C4H10.
闪卡 8
问题
What is the name and molecular formula of the fifth alkane?
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答案
The fifth alkane is pentane, with the molecular formula C5H12.
闪卡 9
问题
Name the alkane that is predominantly present in natural gas.
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答案
The alkane that is predominantly present in natural gas is methane.
闪卡 10
问题
What type of reaction occurs between alkanes and halogens?
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答案
Alkanes undergo a substitution reaction with halogens in the presence of ultraviolet radiation.
闪卡 11
问题
State the equation for methane reacting with bromine in the presence of UV light.
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答案
The equation for methane reacting with bromine in the presence of UV light is: CH4 + Br2 → CH3Br + HBr
闪卡 12
问题
State the equation for methane reacting with chlorine in the presence of UV light.
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答案
The equation for methane reacting with chlorine in the presence of UV light is: CH4 + Cl2 → CH3Cl + HCl
闪卡 13
问题
What are CFCs?
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答案
CFCs are chlorofluorocarbons, an important class of halogenoalkanes.
闪卡 14
问题
True or False? CFCs were previously used in fridges and air conditioners.
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答案
True. CFCs were previously used in fridges and air conditioners.
闪卡 15
问题
What condition is required for alkanes to react with halogens?
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答案
The condition required for the reaction between alkanes and halogens is ultraviolet radiation / UV light.