Chemistry Reference
In-Depth Information
2
1.40
1.25
1.11
0.98 0.94
0.96
0.82
1
0.80
0.66
0.60 0.60
0
1.1
1.2
1.3
1.4
2.1
2.2
2.3
2.4
2.5
3.1
3.2
-1
-2
2
1
0
1.1
1.2
1.3 1.4
2.1
2.2
2.3
2.4
2.5
3.1
3.2
-1
-2
Fig. 9.16
Students' evaluation for the question: Howmuch did you understand in the single steps?
Meaning of the step numbers, see Table
9.5
. Meaning of the ordinate numbers: +2
¼
full
understanding;
2
¼
no understanding at all.
Above
: all students,
below
: boys (
black
) and girls
(
white
). Data from ([
2
], p. 147)
In problem 6, the students were asked to classify the following pure substances
according to their properties ([
2
], p. 91):
