Biology; Chemistry; Physics: Post your doubts here!

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Hello all. I am a chemistry teacher and you can check out my full length step-by-step tutorial videos on YouTube whereI discuss how to approach O-Level and A-Level chemistry papers (mcqs and theories). The channel name is ptet.chemistry.


If you think them beneficial to others or yourself, please subscribe to support the channel. And share with friends, families or students to benefit even more people. Even if you have left school chemistry, it helps YouTube to index searches so i wont mind more subscriptions.
 
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Can any of you guys give me some tips and resources to prepare for Physics 5054? I've barely studied anything and I really would be grateful for some help.
 
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Why is it better to chew the antacids tablets for gastric patients before being swallowed? Why do they work better this way?
 
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Hello fellow students, if you or someone else you know are preparing for O-Level or A-Level chemistry this October/November 2020, or sometime in the future, please check out my YouTube channel where I feature step-by-step tutorial videos on my thought processes in addressing the examination papers across the different variants of the Cambridge International curriculum.


Even if your zone(s) is/are set to sit for a specific variant, it never hurts to check out the same curriculum in other variants for practice. Please subscribe to the channel to support this not-for-profit endeavour. Also, please spread the words to your friends/teachers/contacts to benefit more students like yourself.

More contents will come in the future in terms of topic conceptual developments but my focus for now is to prepare students for public examinations.

Thanks.
 
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As salam o alaikum all. is there a link to the chemistry a course for o levels pdf here?
 
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bhai logon please help me out
below is the question of A levels chemistry paper 42 November 2009 Q. 5 :
1608311748376.png1608311783593.png
 
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hello peeps

guys i need serious help!!! can anyone provide me with physics answers of "end with chapter questions"
 
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hello guys


I need the marking scheme of syllabus 0620 (chemistry) for the year may June 2002 paper 1
does anyone have it? and also I can't find it on any other past paper site
HELP!
 
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hello guys


I need the marking scheme of syllabus 0620 (chemistry) for the year may June 2002 paper 1
does anyone have it? and also I can't find it on any other past paper site
HELP!
 
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Hi guys, so about half a year ago, when I was writing up my thesis, I was inspired to start my own Chemistry tutorial channel. It has since humbly continued to attract more viewers (students/learners, I assume) globally.

www.youtube.com/c/ptetchemistry

I have recently resumed teaching, albeit at a different level, and I have continued to update my channel (in my own free time) with more teaching and learning resources including lectorials (lecture tutorials), practical videos, alternative to practical (for those who did not get the chance to actually work in the laboratory) and importantly, my think-aloud tutorials for exam questions.

It is not a fancy channel, but an educational one at best. In my previous work, I was (and still am!) an accomplished synthetic organometallic chemist, working with some of the most air-sensitive compounds. My passion is however in advancing chemical education and affording equal opportunities for all who want to learn from me.

The topical playlists for O/IGCSE/GCSE (pure chemistry and combined science chemistry) make it suitable for any 14-16 years old at various stages of the curriculum, while that for A/IB make it suitable for any 16-18 years old too.

If you feel the work is worthy, do subscribe and share with friends, chat groups, relatives, etc who can benefit from these resources. To those new to YouTube (just in case), subscribing to my channel cost nothing but will support the channel/work.

You can also follow me on ptet.chemistry on IG, FB and Twitter, to get all the latest updates and to stay connected.

Cheers.
 
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hey guys
can someone help with this problem?
High pressure will increase the yield of SO3. why the reaction is carried at atmospheric pressure in the contact process?
 
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The table gives data about four substances.
Which substance has particles in a disorderly arrangement at room temperature?

melting point/ oC l boiling point/oC
A –114.................. l ... –80
B 120 ....................l .....445
C 750 ....................l..... 1407
D 1610.................. l..... 2230

cant understand the query:(
The answer is A.
The question is asking that at room temperature (about 20-25 C), which of these substances will have particles in a disorderly arrangement (in other words, will be a gas) Since the boiling point of A is -80C so at 25C it will already be a gas. While others have boiling point more than 25 so they will remain solid at room temperature.
 
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