Cardiff International School Dhaka (CISD)
Lost Class Make Up Assignment
Class: 9A
Subject: Chemistry
th
Date: 15 (Sunday)-21st (Saturday) February 2015
Total Mark- 20
Instructions: All of your assignment must be done in A4 size paper. Mention your Name,
Class, Roll and Section clearly on the top sheet of your assignment.
Submission Deadline: Saturday 21st February 10.00 AM to the respective subject teacher.
The deadline is strict.
Name:.........................................................................................................................................................
Class: ......................... Roll: ........................ Sec: .................. Teacher: .............................................
Sunday-Saturday
15-21 February 2015
Lesson:
1. Learn the name and formula of the functional group of (ii) Alkane, (ii) Alkene, (iii) Alcohol
and (iv) Carboxylic Acid
2. Study the chemical properties of Alkane as – (i) Combustion Reaction, (ii) Substitution
Reaction
3. Dot & Cross Diagram of methane and ethane
Task:
Read the lessons carefully mentioned above and answer the following questions.
Worksheet/Exercise:
1. Write the functional group of – (ii) Alkane, (ii) Alkene, (iii) Alcohol and (iv) Carboxylic Acid
[4]
2. Write a balanced equation for the (i) complete combustion reaction of butane and (iii)
incomplete combustion reaction of butane [4]
3. What kind of reaction does alkane gives and what is the condition of the reaction? [2]
4. Write the all steps of reaction when methane reacts with chlorine in presence of sunlight
and draw the structure of each organic product of reaction. [8]
5. Draw the structure of two organic products which will be formed if ethane reacts with
chlorine. [2]
Text Book/Reference Book:
Chemistry Matters, Chapter –22, Page no 391-397,
Answer Key:
1. C-C (single bond), C=C (double bond), OH, COOH
2. Products are - (i) CO2+H2O (ii) CO+H2O
3. Substitution reaction and sunlight
4. CH4 +
CH3Cl +
Cl2  CH3Cl +HCl
Cl2 
CH2Cl2+ Cl2
CHCl3 +

CH2Cl2
+
CHCl3
Cl2  CCl4
+
HCl
+
HCl
HCl
Draw the displayed formua of CH3Cl, CH2Cl2, CHCl3 and CCl4
5.
Help Lines:
For any assistance, please contact
1. Chemistry Teacher:
Shafiqul Islam Patuwary, +8801937075363
2. Principal Head of School: G.M.Nizam Uddin, +88-01622181818,
gmnu302@yahoo.com