Page 21 - Jurnal Pendidikan Tingkatan Enam 2019 - Jilid 3
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JURNAL PENDIDIKAN TINGKATAN ENAM 2019 JILID 3
Table 5.3 Points of elaborations of melting points of elements in period 3
No Points of elaborations
1 Melting Point Increases Na to Si
2 Na, Mg and Al are metals
3 Metallic structure
4 Metallic Bonding
5 Strength metallic bonding Na to Al
6 Delocalised electron
7 Si is Metalliod
8 Giant covalent structure between atoms
9 Si highest melting point
10 P , S , Cl simple molecular structures
11 Weak van der Waals forces
12 Ar monoatom
13 Weakest van der Waals forces
14 Points Orderly arranged
Source: Pre-U Text STPM INORGANIC
In this step, students were asked to list the points of elaboration for the trend according to
the correct order. Students were found to be able to correctly state the points of elaborations
of melting points. They were able to eliminate mistakes, merge and arrange points of
elaborations with guidance from the teacher.
5.3.4 Reflection of Activity 2 ‘Mengecam’
In this activity, students had the opportunity to analyse their friends’ answers. The students
cooperated in the lesson actively participated. Students tried their best to present their
own answers, and practice reasoning. Students were also able to identify and correct each
other’s mistakes. Students who were able to elaborate on the melting point of element 3
were also able to provide explain the trend of melting points of elements in period 2. The
activity has impacted the students positively. Students were supportive of one another and
there was a significant positive change in their attitude towards learning.
5.3.5 The Post-test
The question of the post-test was as follows: ‘Explain the trend of melting point of period 2
elements in terms of structure and bonding’. Although the question is on elements in period
2 but the elements consist of metals, metalloid and non-metals, which would require similar
points of elaboration to explain the melting point. Table 5.4 lists the points of elaborations
of melting points of elements in period 2.
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