Chapter 3-5 Student Chemistry Worksheet - Class X, Central Board Of Secondary Education Page 27
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30Formative Assessment Manual for Teachers
Carbon and its Compounds - Chapter 4
Suggested Remediation:
●
Some students may not recall the prefix for a particular number of carbon and may
name the base chain wrong.
●
Some students may confuse between the prefix ‘al’ is for alcohol’.
●
A few students may not differentiate the structure cyclohexane and benzene.
●
A few students may not count the carbon of carboxyl group in the base chain. Teacher
may repeat the revision exercise.
Carbon and its Compounds
Chapter 4
Assessment technique: Match the column
Objectives: To enable the students to
●
Understand the nomenclature of the hydrocarbons.
●
Identify the name of a hydrocarbon.
●
Appreciate the general formula of a Homologous series.
Task:
Individual
Procedure:
Teacher may give this worksheet to the students to practice the nomenclature of the hydrocarbons
after teaching the same.
Types of bonds and use of general formula of a Homologous series should be recalled prior to that.
●
General formula of Alkanes series is C
H
.ln it all the bonds are single.
n
2n+2
●
General formula of Alkenes is C
H
. It contains one double bond.
n
2n
●
General formula of Alkynes series is C
H
. It contains one triple bond.
n
2n–2
Assessment parameter:
1 mark for every correct match and one mark for completing and verifying the magic square
correctly.
Student Worksheet
Time: 10 min.
Instructions:
Put the number of the hint from the list into the square with appropriate match. Check your answer
by adding the numbers to see if all the sum of the rows both across and down add upto the same
number, the magic number.
57
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