Chapter 3-5 Student Chemistry Worksheet - Class X, Central Board Of Secondary Education Page 18
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30Chapter 4 - Carbon and its Compounds
Formative Assessment Manual for Teachers
Compound
Molecular formula
Structure
Ethanoic acid
Bromopentane
Butanone
Hexanal
Heptyne
Suggested Remediation:
●
Some students may not be able to recall the molecular formula of the compound so
may draw the structure wrong, Teacher may need to repeat the revision exercise.
●
A few students may not count Carbon of Carboxyl group in the base chain and may
write ethanoic acid as C
H
COOH. Teacher may need to revise the concept- and explain
2
5
then that all the carbons that are linked to each other in a chain without any hetero atom
in between are to be counted in root chain.
●
Some students may assume the hexanal to be an alcohol.
●
Some students may not consider the balance of carbon while writing the structure of
compound e.g. Heptyne and carbon may be forming 5 bonds. Teacher need to explain
to them the significance of number of bonds fermed by a carbon atom.
Carbon and its Compounds
Chapter 4
Assessment technique: Data based Worksheet
Objectives: To enable the students to
●
Understand the Homologous series and its characteristics.
●
Write the general formula of Homologous series.
●
Apply the general formula of a homologous series to identify any compound in he
series.
Task:
Individual
Procedure:
Teacher may give this worksheet to the students after teaching - learning the concept of The
homologous series.
Teacher may give the following information to the students as a recall:-
●
A series with the hydrocarbons having same functional group is called Homologous
series.
48
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