Tag: PSLE to O Levels
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Chemistry Periodic Table Trends (Down Group 1 and 17)
This post is about Chemistry Periodic Table Trends (Down Group 1 and 17). Last week, our post was about Chemistry Periodic Table Trends (Across a Period). This week, it will be about trends (Down Groups 1 and 17). Trends Down Group 1 (Alkali Metals) Atomic Size:Trend: Increases down the group.Explanation: As you move down Group…
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Chemistry Periodic Table Trends (Across a period)
This post is about Chemistry Periodic Table Trends (Across a period). Across a Period: Atomic size decreases, and electronegativity and ionization energy increase. Trends:Across a Period: Atomic size decreases, and electronegativity and ionization energy increase.Down a Group: Atomic size increases, and electronegativity and ionization energy decrease. Atomic Size Decreases Across a Period:Reason: As you move…
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Organic Chemistry: Reactions of alkenes
This week post is about Organic Chemistry: Reactions of alkenes. Last week, we talked about the reactions of alkanes. This week, we’re diving into alkenes! First reaction Combustion: Complete Combustion: When alkenes burn in the presence of excess oxygen, they produce carbon dioxide and water. This reaction is similar to the combustion of alkanes but…
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Organic Chemistry : 3 reactions of alkanes SUMMARY
This week post is about Organic Chemistry : 3 reactions of alkanes SUMMARY. First reaction Combustion: Complete Combustion: In the presence of excess oxygen, alkanes burn to produce carbon dioxide (CO₂) and water (H₂O). This is a highly exothermic reaction, releasing a large amount of heat. Examples of complete combustion include the burning of methane…
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Secondary Science: Open-ended questions answering techniques
This post is about Secondary Science: Open-ended questions answering techniques. Looking for answering techniques on Science OEQs? Specific examples of common mistakes in Open-Ended Questions (OEQs) for the GCE O Level Physics !Do you make these common mistakes in your secondary science OEQs? Common Mistake #1 Question: “Explain why the speed of sound is faster…