Chapter 3-5 Student Chemistry Worksheet - Class X, Central Board Of Secondary Education Page 10
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30Chapter 4 - Carbon and its Compounds
Formative Assessment Manual for Teachers
Q3. Name the functional Group / Groups present in the Hydrocarbons listed above.
Q4. Arrange the above hydrocarbons in order of increasing number of carbon atoms.
Q5. What is such type of series called?
Q6. Write down a general formula for the series formed in Question No. 4 indicating the
number of C, H and O atom.
Q7. With the help of the result of Question No. 1 write the next two members of this series
obtained in Question No. 4.
i)
_______________________________________________________________
ii)
_______________________________________________________________
Suggested Remediation:
●
Some students may find it difficult to generalize that two adjacent members of series
of same type of compounds have difference of -’CH
group in formula and ‘14 u’ in
2
molecular mass. Teacher may help them realise this by giving more examples.
●
Some students may find it difficult to make the general formula, teacher may help them
by giving them examples of series with other functional groups (eg. alkenes, alkenes
etc.)
●
Some students find it difficult to extend the series by adding more members. Teacher
may explain, the concept again to them.
●
Further teacher may add that chemical properties of the members of a Homologous
series are same as they all have same functional group and chemical properties of a
compound mainly depends on the functional group present in it. Data about physical
properties of members of a homologous series may be shared with the students to make
them appreciate the constant gradation in the physical properties of the homologues.
Carbon and its Compounds:
Chapter 4
Assessment Technique: Project
Objectives: To enable the students to -
●
Gain expertise in the skill of naming hydrocarbons
●
Write the structural formula of hydrocarbons
Task:
Individual
Procedure:
The teacher may give this task to the students after explaining the concept of nomenclature of
hydrocarbons.
40
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