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Lesson on Balancing Chemical Equation

Subject / Topic:   Chemistry / Balancing Equation Type of lesson:   Conceptual / Application   Prior Knowledge Chemical formula   Lesson Objective Students will apply the law of conservation of mass to understand the concept of balancing chemical equations. Duration (Total 65 mins) Brief outline of activity Remarks / Resources 10 mins Activate Learning: Online quiz as a formative assessment to chemical formulae   Students will understand that the chemical formula of a substance describes its composition.   Kahoot 25 mins Engagement Introduction on Law of Conservation of Mass   -         Student to draw the product when wood is burnt and when a plant undergo photosynthesis. -         Wood + Fire à CO 2 + H 2 O vapour + ash -         CO 2 + plant + s
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O level Sci Chemistry - 2019 MCQ

Hi there! Finally, I've completed one yearly paper. This is the trilogy to the 2019 Paper - the MCQ video tutorial. In this paper, I observed that there are many questions that require you to identify the incorrect / false statements. So do take note. The tougher questions are 25, 28, 29, 32, 33, 37. Do try them on your own before checking your answer, so you could experience the rigor of the paper. O level Sci Chem - 2019 MCQ If you are looking for all the video tutorial for the year 2019, here's the remaining sections: O level Sci Chem - 2019 Section A O level Sci Chem - 2019 Section B “Education is the passport to the future, for tomorrow belongs to those who prepare for it today.”  — Malcolm X Till next time!
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O level Sci Chem - 2019 - Section B

Hi there, The three final questions in 2019 Paper is here. Due to technical error, I have to recorded myself twice, so here are the 2 video tutorial: O level - Sci Chemistry - 2019 - Q8 a and b O level - Sci Chemistry - 2019 - Q8c onwards Enjoy! “You’ve got to get up every morning with determination if you’re going to go to bed with satisfaction.” – George Lorimer Till next time!
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O level Pure Chemistry - Topical - Salts

Howdy! I hope the video tutorials have been helpful for you. This post will link you to the topic on Salts. In 2019, in the Combined Science paper, there was a 4-marks structured question on describing the preparation of sodium sulfate . If you paused for a moment and think about the above question, would you be able to a) state the preparation method? b) write out the step-by-step procedure? Meanwhile, here is the video link to the Pure Chemistry  Topical TYS - SALTS  questions. “Strive for progress, not  perfection.” – Unknown Till next time!
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O Level Sci Chemistry - 2019 Section A

Hi there, This is the video tutorial of the 2019 paper, Section A. Concepts being tested here include: Atomic structure - relative mass and relative charge of sub-atomic particles Organic chemistry (Alkane, Alkene reactions)  Separation Technique (fractional distillation)  Kinetic Particle Theory (arrangement and movements of solid and gas)  Mixture vs Compounds  Speed of reaction (drawing graph and explain the shape of graph)  Writing chemical formula  Video link:  2019 Sci Chem - Section A “Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.” – Thomas A. Edison Till next time! 
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N level Sci Chem - Elements, Compounds and Mixtures, Atomic Structure

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Good morning good morning, Two topics coming right up in this post! A summary of popular questions based on the topics: Elements, Compounds and Mixtures Distinguishing the diagrams for elements, compounds, mixtures Note: Elements can exist as atoms / molecules [Refer to question 1, diagram R and S respectively] Common examples of mixtures - air, crude oil / petroleum / seawater / alloys e.g. brass, steel Good to know: the definition of elements, compounds, mixtures as it will guide you towards identifying them.  Video tutorial for elements, compounds, mixtures:  N level Sci Chem - Elements Compounds Mixtures Atomic Structure  The three subatomic particles and their relative charges and approximate relative massess.  'Location' of the three  subatomic particles. Define isotopes and describe similarity / differences in given isotopes (See Section B, question 1)  Writing electronic configuration, drawing electronic structure of atoms and ions  Descr
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N level Sci Chem - Experimental Technique, Separation & Purification, Kinetic Particle Theory

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Good (extra) morning, The end of circuit breaker is around the corner and I have been training myself to wake up earlier than usual to get ready for school reopen. I hope you are geared up for school, after all, you have not seen your friends for the past two months! So in today's post, I've put together the video link for the first three topics. A summary of popular questions based on the topics: Experimental Technique Identifying apparatus based  on given diagram  Accuracy of apparatus (measuring cylinder, burette, pipette) note: burette measures to the nearest 0.1 cubic metre; the burette reading is accurate to 0.05 cubic metre e.g. 22.70, 24.65  Video tutorial for experimental technique:  N level Sci Chem - Experimental Technique Methods of Purification  Identify the set-up for the various method of purification  Identify the states of matter based on given melting and boiling points.  Chromatography - reading the results of chromatogram to identify
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