Q1.This question is about hydrocarbons.
(a)     The names and formulae of three hydrocarbons in the same homologous series are:
Ethane             C2H6
Propane           C3H8
Butane             C4H10
The next member in the series is pentane. What is the formula of pentane?
........................................................................................................................            (1)

(b)     Which homologous series contains ethane, propane and butane?
 
 	Tick one box.	 	
 	Alcohols	 	
 	Alkanes	 	
 	Alkenes	 	
 	Carboxylic acids	 	
(1)
(c)    Butane (C4H10) is an alkane.
Complete the displayed structure of butane.

(1)
(d)     (i)      Complete the sentence.
Hydrocarbons contain the elements ......................... and .........................   only. (1)
(ii)     Ethane is an alkane with the formula C2H6
Draw a ring around the correct answer to complete the sentence.
  	Alkanes are hydrocarbons with the general formula	CnHn
CnH2n
CnH2n+2	

(1)

Q1.This question is about hydrocarbons.
(a)     The names and formulae of three hydrocarbons in the same homologous series are:
Ethane             C2H6
Propane           C3H8
Butane             C4H10
The next member in the series is pentane. What is the formula of pentane?
........................................................................................................................            (1)

(b)     Which homologous series contains ethane, propane and butane?
 
 	Tick one box.	 	
 	Alcohols	 	
 	Alkanes	 	
 	Alkenes	 	
 	Carboxylic acids	 	
(1)
(c)    Butane (C4H10) is an alkane.
Complete the displayed structure of butane.

(1)
(d)     (i)      Complete the sentence.
Hydrocarbons contain the elements ......................... and .........................   only. (1)
(ii)     Ethane is an alkane with the formula C2H6
Draw a ring around the correct answer to complete the sentence.
  	Alkanes are hydrocarbons with the general formula	CnHn
CnH2n
CnH2n+2	

(1)

M1.(a)     C5H12
1

(b)     Alkanes
1

(c)     
1

(d)     (i)      hydrogen / H and carbon / C
answers can be in either order
if letters given, must be capital H
1

(ii)     CnH2n+2
1

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