This post is the list of PEKA experiments for SPM Chemistry Form 4 from Berry Berry Easy. Please familiarise with all these experiments from Form 4 Chemistry Chapter 4: Periodic Table of Elements before conducting them so as to be better prepared. The list of experiments are as below:
Berry List of Chemistry Experiments (PEKA) Form 4 (Part 3)
Chapter 4 – Periodic Table of Elements
List of PEKA experiments:
- Chemical properties of lithium, sodium and potassium
- Chemical properties of Group 17 elements
- Properties of the oxides of elements in Period 3
Number | Experiment 4.1 |
Pg. | 35 |
Title | Chemical properties of lithium, sodium and potassium |
Aim | To investigate the chemical properties of lithium, sodium and potassium |
Problem Statement | How does the reactivity of Group 1 elements change when they react with water and oxygen gas, O2? |
Hypothesis | When going down Group 1, alkali metals become reactive in their reactions with water |
Apparatus |
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Material |
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Variables |
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Operational Definition | An alkali metal that reacts more vigorously with water is more reactive metal |
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Number | Experiment 4.2 |
Pg. | 39 |
Title | Chemical properties of Group 17 elements |
Aim | To investigate the chemical properties of Group 17 elements
(A) Reactions of halogens with water (B) Reactions of halogens with iron (C) Reactions of halogens with sodium hydroxide, NaOH solution |
Problem Statement | How do halogens react with water, iron and sodium hydroxide, NaOH solution? |
Hypothesis | (A) Reactions of halogens with water
(B) Reactions of halogens with iron Halogens form iron(III) halides when they react with iron / When going down Group 17, halogens become less reactive in their reactions with iron (C) ) Reactions of halogens with sodium hydroxide, NaOH solution Halogens form sodium halide, sodium halite(I) and water when they react with sodium hydroxide / When going down Group 17, halogens become less reactive in their reactions with sodium hydroxide solution |
Apparatus |
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Material |
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Variables | (A) Reactions of halogens with water
(B) Reactions of halogens with iron
(C) ) Reactions of halogens with sodium hydroxide, NaOH solution
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Operational Definition | (A) Reactions of halogens with water
(B) Reactions of halogens with iron The appearance of a brown solid shows the formation of iron(III) halides (C) ) Reactions of halogens with sodium hydroxide, NaOH solution The formation of a colourless solution indicates that salts of sodium halide, sodium halite(I) and water are formed |
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Number | Experiment 4.3 |
Pg. | 45 |
Title | Properties of the oxides of elements in Period 3 |
Aim | To study the properties of the oxides of elements in Period 3 |
Problem Statement | How do the acid-base properties of the oxides of elements change across Period 3? |
Hypothesis | Acidic properties of the oxides of elements increase whereas basic properties of the oxides of elements decrease across Period 3 |
Apparatus |
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Material |
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Variables |
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Operational Definition |
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