Btw guys, tajuk apa lagi dlm maths yg korang rasa susah nak faham ? 🤔

Nak tak min buat video cara jawab mcm haritu lagi?

Boleh tak beri feedback abt my last 2 videos? Anything I can improve in? Atau ada apa2 suggestions maybe?🧐

Jom jawab soalan bio ✊🧬

Quiz with Heera
🧬Biology

#quiz #biology
#heera

~ Random Bio Questions ~
#biology #quiz

¿ To be continued ?

Share your scores below 😋
(_/5) ?

Chemistry with Heera🐼🧪

🌷Oxidising Agent:
👉that oxidises the other substance
👉undergoes reduction
👉oxidation number decreases
👉loses O2
👉gain H2
👉gain electron

Examples:
1⃣💜Acidified potassium manganate (VII), KMnO4

2⃣Acidified potassium dichromate (VI), K2Cr2O7

3⃣💛Chlorine water, Cl2

4⃣🤎Bromine water, Br2

5⃣Acidified hydrogen peroxide, H2O2



🌷Reducing agent :
👉 that reduces the other substance
👉undergoes oxidation
👉oxidation number increases
👉gain O2
👉loses H2
👉loses electron

Examples:
1⃣Potassium Iodide, KI

2⃣Potassium Bromide, KBr

3⃣Iron(ii) sulphate, FeSO4

4⃣Reactive metals (e.g. Zn and Mg)

5⃣Sulphur dioxide, SO2


#chemistry #c1 #f5
#heera

@heeranotes

Chemistry with Heera🐼🧪

Define redox reaction
👉 Redox reaction is a chemical reaction where oxidation and reduction occur simultaneously

#chemistry #quiz

🧬Randomzzz bio question

What is the difference between fume chamber, laminar flow cabinet and biological safety cabinet?

What are the functions of the laboratory equipments stated?

#biology #quiz