prediction question
🌺 if hcl is replaced with ethanoic
- rate of reaction decrease
- weak acid . ionise partially in water to produce h+
🌺 hcl => h2so4
- rate if reaction increase
- diprotic acid
- concentration h+ is doubled
🌺 mg ribbon => mg powder
- rate of reaction increase
- size decrease
- higher total surface area that is exposed to acid
🌺 mg => copper
- does not dissolve in hcl
- less electropositive that hydrogen
🌺 if hcl is replaced with ethanoic
- rate of reaction decrease
- weak acid . ionise partially in water to produce h+
🌺 hcl => h2so4
- rate if reaction increase
- diprotic acid
- concentration h+ is doubled
🌺 mg ribbon => mg powder
- rate of reaction increase
- size decrease
- higher total surface area that is exposed to acid
🌺 mg => copper
- does not dissolve in hcl
- less electropositive that hydrogen
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Serene NotesChannel ʕっ•ᴥ•ʔっ pinned «Bittaufiq wannajah batch 06 for your Chemistry amali 🫶🏻✨ Doa byk2 supaya dipermudahkan amali esok»
Apa2pun result harini, I'm proud of you all🫶🏻
You guys gave your best and that's what matters okeyy😽
You guys gave your best and that's what matters okeyy😽
❤49👍3
experiment food energy value (dlp version) ✨ credit : https://www.cikgusobe.com/2023/11/hello-malaysia-bimbingan-atas-talian.html
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Amali Biologi mngkin xde prosedur??
Pstikan msuk sesi mlm ni bersama Cikgu Rama, ataupun sprti dikenali rmai The Teacher in Saree..
Akan disiarkan LIVE di Youtube scara PERCUMA
Link akan dikongsikan di @PerkasaSPM
Pstikan msuk sesi mlm ni bersama Cikgu Rama, ataupun sprti dikenali rmai The Teacher in Saree..
Akan disiarkan LIVE di Youtube scara PERCUMA
Link akan dikongsikan di @PerkasaSPM
Serene NotesChannel ʕっ•ᴥ•ʔっ pinned «Apa2pun result harini, I'm proud of you all🫶🏻 You guys gave your best and that's what matters okeyy😽»
Procedure
1. 20 ml of distilled water is measured using measuring cylinder and poured into boiling tube.
2. Boiling tube is clamped to a retord stand.
3. Thermometer is kept in place in boiling tube by cotton wool. (kalau tanya kenapa, to reduce heat loss)
4. The initial temperature of the water in boiling tube is recorded using thermometer. (precaution : thermometer must not touch the base of boiling tube)
5. Nut is spiked firmly to the end of a pin which is mounted on some plasticine.
6. The apparatus set up is placed in a shield.
7. The food sample is ignited by holding it to the flame of bunsen burner.
8. The burning nut is immediately placed beneath the boiling tube to heat the water. (distance between boiling tube and burning peanut should not be far)
9. Water is gently stirred with the thermometer (why? To ensure heat is evenly distributed)
10. The highest final temperature is recorded using thermometer as soon as the nut has stopped burning. (why? To ensure it's completely oxidised)
11. Energy value is calculated using formula : (tulis formula, kalau ada 'x1000' kat denominator maksudnya unit kita 'kJg^-1', kalau takde 'x1000' unit kita 'Jg^-1')
12. Record and tabulate the data.
13. Repeat step 1-12 using using dried bread.
*nnt tukar ikut experiment
1. 20 ml of distilled water is measured using measuring cylinder and poured into boiling tube.
2. Boiling tube is clamped to a retord stand.
3. Thermometer is kept in place in boiling tube by cotton wool. (kalau tanya kenapa, to reduce heat loss)
4. The initial temperature of the water in boiling tube is recorded using thermometer. (precaution : thermometer must not touch the base of boiling tube)
5. Nut is spiked firmly to the end of a pin which is mounted on some plasticine.
6. The apparatus set up is placed in a shield.
7. The food sample is ignited by holding it to the flame of bunsen burner.
8. The burning nut is immediately placed beneath the boiling tube to heat the water. (distance between boiling tube and burning peanut should not be far)
9. Water is gently stirred with the thermometer (why? To ensure heat is evenly distributed)
10. The highest final temperature is recorded using thermometer as soon as the nut has stopped burning. (why? To ensure it's completely oxidised)
11. Energy value is calculated using formula : (tulis formula, kalau ada 'x1000' kat denominator maksudnya unit kita 'kJg^-1', kalau takde 'x1000' unit kita 'Jg^-1')
12. Record and tabulate the data.
13. Repeat step 1-12 using using dried bread.
*nnt tukar ikut experiment
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Cara mengendalikan pembolehubah untuk:
- Pembolehubah Dimanipulasi:
Gunakan jenis sampel makanan yang berbeza iaitu kacang tanah dan roti kering
- Pembolehubah Bergerak Balas:
Perhatikan/ Kitakan/ Rekod perubahan suhu air suling menggunakan termometer
- Pembolehubah Dimakamkan:
Gunakan isi padu air yang tetap iaitu ____ ml
Done, translate 👍
Credits: Sa_Syaz
- Pembolehubah Dimanipulasi:
Gunakan jenis sampel makanan yang berbeza iaitu kacang tanah dan roti kering
- Pembolehubah Bergerak Balas:
Perhatikan/ Kitakan/ Rekod perubahan suhu air suling menggunakan termometer
- Pembolehubah Dimakamkan:
Gunakan isi padu air yang tetap iaitu ____ ml
Done, translate 👍
Credits: Sa_Syaz
👍3❤2
TIPS 8 MENDEFINISI SECARA OPERASI | DEFINE OPERATIONALLY
DSO adalah bahagian yang sering ditanya oleh murid-murid.
Ini adalah asasnya.
Tips penuh boleh rujuk di sini
TIPS MENJAWAB UJIAN AMALI SAINS (BIOLOGI) SPM
TIPS 8 MENDEFINISI SECARA OPERASI | DEFINE OPERATIONALLY
Bagaimana nak bina DSO?
Tips penuh boleh rujuk di sini
TIPS MENJAWAB UJIAN AMALI SAINS (BIOLOGI) SPM
TIPS 8 MENDEFINISI SECARA OPERASI | DEFINE OPERATIONALLY
Contoh 1
Tips penuh boleh rujuk di sini
TIPS MENJAWAB UJIAN AMALI SAINS (BIOLOGI) SPM
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All the best korgg for the last amali
Bittaufiq wannajah
Bittaufiq wannajah
🔥16❤9