IChemAchieve

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

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

Howdy! I'm feeling driven to get the Loom videos ready so I could journey with you towards your national examination. I hope you have been good. Today resource on metals and there are a total of 31 MCQ questions for the last ten years. If you do a quick math, that is an average of 3 metal-related MCQ per year. This year, there could be more because the one full section on Organic Chemistry has been removed from your testable syllabus. More information on  Syllabus 5106 Year 2020 A summary of this chapter popular question includes: Structure of alloys  General properties of metals (take note: Group I metals - Alkali metals do not behave like conventional metals) Advantages of recycling  Conditions for rusting, especially how oxygen gas is used up and water level in a set-up will rise accordingly)  Reactivity of metals (based on observation of reactions, with water, with steam, with carbon)  Blast Furnace  A breakdown on the weightage of this chapter in 2019 ex

Closely linked to the chapter on Acids + Bases would be this chapter on SALT. A summary on the popular questions: Test of gas and its observation Steps in salt preparation  Reason why excess solid (metal / base / carbonate) is used  Write balanced equation of acid + metal / carbonate / base  Identify the starting reagents to prepare a salt  And the link to this chapter's video are here:  N level - Salts - MCQ + Structured Qn “There are no shortcuts to any place worth going.” – Beverly Sills Till next time! 

This topic - Acids + Bases is one you would have learnt in your secondary 3 year. Although not current, it is one of the higher weightage topics in the N level examination. So let's dive in! A quick glance on the popular questions: s s s s s And the link to the this chapter videos are here:  N level Acids + Base - MCQ 1 to 3 N level Acids + Base - rest of the MCQ N level Acids + Base - Structured Qns “Strive for progress, not perfection.” – Unknown Till next time!

Hi again! This post will guide you through the TYS Questions on Mole Concepts. Again, I am using Shing Lee Education Ten-Years Series 2010-2019 in these videos. This chapter is usually not a popular topic among students 😅 but with practice, you will definitely be able to conquer this chapter. A quick summary of this chapter testing focus: Formula of substances such as hematite, ammonia, magnesium chloride, hydrogen chloride, sulfuric acid, nitric acid, sodium hydroxide Writing / Balancing chemical equations This formula: Mass = mole x MR or no. of mole = mass / MR These 3 steps to complete a typical mole concept question: Identify the no. of mole of substance provided  Compare the mole ratio between the substance you have versus what you need to identify  Identify the mass of substance produced / reacted based on the needs of the question  The links to the videos are here:  N Level - Mole Concept - MCQ N Level - Mole Concept - Structured  Most important

Hi there! Welcome to my blog. This is my first post and I would like to give you a brief introduction on why I started this space. I am a teacher, who is inspired to help students during this circuit breaker period. School closed, full HBL started and even the highly anticipated June holiday has been shifted forward and now we can only stay home (and should!). I came across an article ( Home-Based Learning blues ) almost three weeks into the circuit breaker. Some teenagers were shouldering responsibility of being a parent to their younger siblings, while their parents need to work during this circuit breaker. They had juggle with their own academic and being a care-giver. And that is definitely not an easy feat, especially not for a child who is facing national examination in the coming months. Hence, I decided to step up during this trying times. I reflected on the time with my past graduating classes and decided the most time-consuming but essential to complete was go

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