Project Chemistry A+
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We, the young teachers for chemistry want to help all of the students to understand well and achieve A+ in chemistry 🧪 You guys can reach out your young teachers here: @hazimw0rld @deebamalyn @tnsryy @Ishrafree @hanandamiia
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| تاریخ | رشد مشترکین | اشارات | کانالها | |
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پستهای کانال
+1Goodluck for tmrw everyone!!
thank you for staying with us until the end..no matter what happened tomorow, just go with the flow.
Kami selaku young teacher chemistry ingin memohon maaf jika ada salah silap atau serba kekurangan dalam berkongsikan ilmu kami…semoga segala ilmu yang kami kongsikan selama ini dapat membantu semua hehe..
Bye semuaa!
#pcA+ #Apelahsokmo
| 2 |  بدون متن... | 1 388 |
| 3 | ❗️COMMON 3/4M QUESTION❗️
⚠️Those are NOT PREDICTED QUESTIONS. Please don’t depend too much on ramalan, we already experienced from sejarah right😞 Instead, learn how to study everything, we got this!!🔥
❤️F4C4❤️
1. Why size of elements decreases across the period?
- Number of protons in the nucleus of an atom increases across the
period.
- Positive charge in the nucleus of an atom increases.
- Attraction force between nucleus and valence electron becomes stronger across the period from left to right.
🩷F4C5🩷
1. How metals can conduct electricity in solid state? (*Cu)
- Copper atoms are arranged closely packed and orderly in solid state.
- Positively-charged copper(II) ions are formed when valence electrons forms sea of electrons.
- Sea of delocalised valence electrons carries electrical charge from negative terminal to positive terminal when electricity is supplied.
- This movement of sea of delocalised electrons produce electrical current.
🧡F4C6🧡
1. Why different pH value for both acids? (*HCl&CH3COOH)
- Hydrochloric acid is a strong acid that ionises completely in water whereas ethanoic acid is a weak acid that ionises partially in water.
- Hydrochloric acid produces higher concentration of hydrogen ions than ethanoic acid.
- The higher the concentration of hydrogen ion, the lower the pH value.
- pH value of hydrochloric acid is lower than ethanoic acid.
💛F4C8💛
1. Why bronze is harder than pure copper?
- In pure copper, all copper atoms have same size whereas in bronze, copper atoms and tin atoms have different sizes.
- All copper atoms in pure copper are arranged in orderly manner whereas copper atoms and tin atoms in bronze are not arranged in orderly manner.
- When force is applied, layers of copper atoms in pure copper slide over each other easily whereas layers of copper atoms and tin atoms in bronze difficult to slide over each other.
💚F5C3💚
1. Why heat of combustion of ethanol is higher than methanol?
- Number of carbon atoms amd hydrogen atoms in ethanol is greater than methanol.
- More carbon dioxide gas and water molecules are formed in ethanol than methanol.
- More bond formation are formed in ethanol than methanol.
- More heat is released in ethanol than methanol.
2. Why heat of neutralisation of strong acid&alkali is higher than weak acid&alkali? *state the name specifically based on ques
- Strong acid and strong alkali ionises completely in water whereas weak acid and weak alkali ionises partially in water.
- Some weak acid and weak alkali remain as molecules.
- Some of the heat released during neutralisation is absorbed to completely ionise the weak acid and weak alkali in water.
3. Which one is better fuel (vehicle)?
*COMPARE from the aspect :
- Percentage of carbon atom per molecule
- Production of soot (Ex. X produces more soot than Y)
- Air pollution
- Production of carbon dioxide gas that causes environmental pollution
4. Which one is better fuel (cooking)?
*COMPARE from the aspect :
- Percentage of carbon atom per molecule
- Production of soot
- Production of carbon dioxide gas and water molecule
- Release of heat (Releases more heat, cook faster)
5. What happen to heat of precipitation when potassium sulphate is replaced with sodium sulphate?
- No changes (state the value when given)
- Number of moles of sulphate ions in sodium sulphate is the same as in potassium sulphate.
🩵F5C4🩵
1. Why vulcanised rubber is more elastic/better than unvulcanised rubber?
- Vulcanised rubber have strong sulphur cross-link between carbon molecules.
- This prevents rubber polymer from slidding when it is stretched.
- Rubber molecules return to its original shape after being stretched.
💙F5C5💙
1. What you should do when you’re prescribed antibiotics?
- One should fully consume the antibiotics.
- So that all bacteria can be killed.
- Otherwise, the bacteria will become immune to antibiotics and disease will recur.
*If you have questions, feel free to ask !!❤️
Credit : @studykimia | 1 514 |
| 4 | بدون متن... | 1 063 |
| 5 | +1 esei bahagian c daripada trial 2023 berberapa negeri | 648 |
| 6 | Slaid perkongsian Kimia mlm ni
Hak cipta cg Komathy @PerkasaSPM | 777 |
| 7 | +1 tenung tenung ni | 960 |
| 8 | بدون متن... | 971 |
| 9 | بدون متن... | 1 251 |
| 10 | +6 procedure trial negeri | 10 987 |
| 11 | Analisis SPM with target.pdf | 928 |
| 12 | +1 بدون متن... | 1 081 |
| 13 | tenung la gambar ni mana tahu tiba tiba dia suruh lukis 🤔 | 946 |
| 14 | ❤️🔥FULL F5C4 Polymer notes❤️🔥
#form5
Credit : @studykimia | 707 |
| 15 | Trial 23' Manufacture F4 + consumer, industrial chem F5
I did a short notes for all those memorising chapters based on trial 2023!!
#form4
#form5
Credit : @studykimia | 667 |
| 16 | +3 Precaution steps‼️‼️ | 906 |
| 17 | بدون متن... | 808 |
| 18 | بدون متن... | 1 119 |
| 19 | Last minute chem revision for
🔥Important Experiment Essay🔥
#form4
#form5
Credit : @studykimia | 652 |
| 20 | 10 questions done, nanti ada masa lagi kita sambung chapter 4 form 5 | 706 |
