Page 11 - Ranger SPM 2022 Chemistry

Chemistry SPM Chapter 1 Introduction to Chemistry
Subjective Questions (c) In a simple chemical activity, Muthu
adds a handful of egg shells into
Section A a glass of vinegar. Immediately, he
sees some colourless bubbles.
1. Mirah and Fella are given red litmus (i) Name two chemicals involved
Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
papers, blue litmus papers and in the experiment.
toothpaste. Mirah tested the red litmus [2 marks]
paper and blue litmus paper on the
toothpaste whereas Fella moistened (ii) What is the observation obtained
both blue litmus paper and red litmus from the experiment?
paper before testing them on the [1 mark]
toothpaste. They found out that their (iii) State all the variables for this
observations on the dry litmus papers experiment.
and moist litmus papers were different. [3 marks]
Form 4
(a) State the problem statement for
this experiment.
[1 mark]
Section C
(b) State all the variables for this
experiment. 3. (a) Chemicals are commonly used in
[3 marks] daily life. State four fields in which
chemicals are usually used. For
(c) State the hypothesis for the each field, give two examples of
experiment. chemicals and their functions.
[1 mark] [12 marks]
(d) State three observations. (b) (i) Diluted acid accidentally
[3 marks] splashes on Ali’s eye and spills
on his laboratory coat.
(e) State the reason why the moist What should he do?
HOTS red litmus paper turns blue when [5 marks]
HOTS
tested on the toothpaste.
[2 marks] (ii) State three importance of
HOTS
HOTS rules and safety measures in
the laboratory.
Section B [3 marks]
2. (a) Give four storage methods for
chemicals in the laboratory.
[4 marks]
(b) List out the scientific investigation
method according to its
sequence. [10 marks]

6

01.4 RANGER SPM CHEMISTRY 1P.indd 6 29/03/2022 12:05 PM