Radioactivity and particles revision (Edexcel IGCSE physics topic 7)

[@milzime1755]

you. are. amazing. Its so hard to find good resources for iGCSE, this channel is an oasis of knowledge lmao THANK YOU

[@jorgethestarman4409]

nice vids man!! really helpfull for my igcse mocks.

[@Jelarob]

So useful thanks man

[@iArchi]

Bruh your videos are still works.... Thxxx

[@natkubama]

Thank you :D!

[@hiraali7525]

can u do a podcast revision of astrophysics as well ?

[@samiadicosta1145]

Thank u sir

[@ahx2468]

So helpful cheers

[@farazarkam1797]

Could you kindly tell me the reason why the Zinc Sulphide screen is used Geiger and Marsden's experiment? Thank you... +Ben Ryder

[@benaryder]

+Mohammed Faraz Arkam zinc sulphide flashes when it is hit by alpha particles; it converts the kinetic energy of the particle into light energy. Geiger and Marsden were able to count these flashes when looking down the microscope, and that's how they knew how many alpha particles reached a particular location.

[@farazarkam1797]

+Ben Ryder right.... thank you so much for the answer... however...why do radiations which have a higer ionising power travel so less in air?

[@benaryder]

+Mohammed Faraz Arkam A good question - and often misunderstood. The more highly ionising, the more quickly the particle uses up its energy. When it has run out of energy, it stops, and is no longer able to penetrate.

[@farazarkam1797]

+Ben Ryder here is another doubt which i had.... is alpha particle a helium particle or is it a particle which has similar properties of helium...in the same way is the beta particle and electron or is it because of the balancing of the decay equation that it is similar to an electron. Thank you and sorry for troubling you...

[@benaryder]

+Mohammed Faraz Arkam An alpha particle is exactly the same as a Helium nucleus (2 protons and 2 neutrons). They are identical in composition. A beta particle is the same as an electron - although the beta particle is moving fast in a straight line. Fundamentally though, it is the same particle.

[@ak02.9]

0:11 Atomic Notation 2:05 Ionising Radiation 3:37 Types of Radiation 5:22 Nuclear Decay Equation 8:44 Detecting Radiation 10:21 Half Life 13:28 Tracers 15:33 Radiation and the Body 16:19 Rutherford Scattering 18:14 Nuclear Power

[@talalmusic6583]

I owe u big time...

[@remarkablething5874]

More than a decade later and still helping igcse students. I have my mock exam tomorrow and this channel is a great edexcel revision source- hats off to you sir! I hope you find yourself well in life.

[@painkillers7654]

how did the mock go? i'm having mine tomorrow!

[@remarkablething5874]

@@painkillers7654 pretty alright I got a 9 I think, hbu ??

[@remarkablething5874]

@@painkillers7654 you ready for the real thing now 💀😬

[@enwhy9228]

It's really sad that I researched about this videos so late today I gave my IGCSE Physics paper 1 but If I got this videos even one day before that exam I would have score 20+ marks.Tomorrow is the Paper 2 please pray for me. And thank you for making such amazing videos.

[@jumanahidris7432]

Oh man how did it go?

[@ruvarashechido7163]

My exam is on a couple of ours 🤧I should have used hes videos they are way better

[@shaukatsaamah]

Heard about via a friend and you are amazing, my physics teacher isn't so good so this really helps thankssss

[@farrukhjavaid9318]

A really helpful help. thanks for making these videos, and i praise ur hardwork alot. May God bless u.

[@fazlayj]

Tomorrow is my IGCSE exam and I am here just for a quick revision,thanks to people you for uploading such important videos to help us.

[@sufiyantaher593]

Same lol

[@manaalsajahan]

Sir thank you sm , its hard to find IGCSE Edexcel's but u did it , here after 12 years

[@unaqian6295]

thank you so much..

[@itzme3503]

I was not able to understand the concept of radioactivity but now its clear

[@ImAcHoCoHoLiC2]

@benryder I just want to say thank you, i only discovered your videos 11 hours before my physic exams that I have in the morning, I cannot thank you enough as it consolidated everything I had learnt in two year over two hours. Thank you, hopeful I will get the A* I am predicted, I will report back in august!

[@yesidek]

howd it go

[@Budgetreworks]

thankyou so much for this. I have a monthly test / exam tomorrow for this unit and delayed it all till midnight. i was shocked to my core when i found this video cuz its so hard to find igcse edexcel videos and finding one for this unit is super helpful

[@hackmyrank1144]

This vedio was made 11 years ago

[@Fam98KK]

No Video for Astrophysics !? These Videos are 9 years Old but saved my 2021 Exam Thnx for everything

[@benaryder]

I'm working on one!

[@hey3001]

i loved ur video ben ryder keep up doing the good work

[@fahimma5559]

Your hardwork has really helped me a lot.Please keep uploading videos like this.Thank you.

[@rahma8604]

Thanks for the great content ❤️

[@kateaustins8106]

This is so helpful, thank you!

[@jumanahidris7432]

Why would a beta particle rip an electron from an atom? They're both negatively charged; they would repel.

[@benaryder]

Exactly, they would repel. So it would push the electron out of its orbit, if it got close enough.

[@benaryder]

The pipe in the example is underground. Only gamma radiation would be able to penetrate through the soil. A larger count would be seen in areas where water (containing the radioactive isotope) had leaked out.

[@jollyjumper7648]

great video but at 17:49 you said the nucleus is mostly empty space and I think you meant atom

[@benaryder]

You're right - thanks for spotting.

[@vaibsvaib2097]

Hey. I love all your physics revision videos. Could you please give us a link to the ppt so we can write some notes?

[@benaryder]

Sorry, I don't share the slides for free, only the videos! I made flashcards for my pupils - you can download them at sellfy.com/benaryder at a small cost.

[@ninety9iner438]

Soooo useful ! summarised the whole thing ! Thanks mate!

[@Sk8inDuck]

@ 17:49, Isn't it the whole atom that is mostly empty space, not the nucleus?

[@mushroomravioli1406]

i keep returning to u out of all channels...thank you for all the effort man, i have my p2 tomorrow and you're gonna get me through it all again, kind sir :)

[@lululucier7711]

nice works is done by you guys you can do best

[@jonathanng5218]

great video!

[@sanjeedameem3068]

thank u so much ...it has helped me a lot

[@benaryder]

Yes - of course! Sorry for the stupid mistake, and thanks for spotting it.

[@jasmindhillon6897]

Thank you!

[@yousefsuhil5657]

thank u so much u cleard most of my doubts

[@vandomog1013]

A great video. Thanks

[@shaikhuzma8669]

thank u sooooo much sir 👏👏👏

[@jaimirpuri13n7]

No more tracers after new syllabus. Great video

[@benaryder]

Thanks for that! I should really update all the videos now...

[@sheikhayub8050]

Man you are truly amazing . Thank you so much for this. It helped me a lot.

[@TopG20073]

But don't they attract an electron from the atom when passing through the gold plating?

[@benaryder]

They do attract it, but the alpha particle is travelling too quickly to capture that electron.

[@benaryder]

In fact, alpha particles will rip of around 100,000 electrons from atoms it passes past before eventually gaining two electrons to become a Helium atom. The typical energy of an alpha particle is of the order of a few MeV and the energy needed to ionise most atoms is of the order of 10 eV (1 MeV / 10 eV = 100,000 ions)

[@TheAnonymous63]

Why would we use gamma rays to check for leaking pipes if all of it would penetrate through regardless of a leak; wouldn't we use a type of radiation that would not normally penetrate through pipe-making materials? Sorry for the silly question

[@TheDanielo1999]

respect man, great work

[@noorashfaq3242]

I FINALLY UNDERSTOOD RADIOACTIVITY CHAPTERS!!! A HUGE THANK YOU

[@TopG20073]

17:09 it also depends on the angle of the direction where the alpha particle hit.

[@Bigmacmaniac]

You're underpaid!

[@ashmos6397]

thank you so much

[@khadijad1599]

Amazing explanations. Clear, calm voice sinks right through my head. Thanks Ben. Could u somehow add in Nuclear Fusion? Apparently its in our Edexcel curriculum.

[@benaryder]

Fission is on the spec, but not fusion. Check qualifications.pearson.com/content/dam/pdf/International%20GCSE/Physics/2011/Specification%20and%20sample%20assessments/UG030051_International_GCSE_in_Physics_(master_booklet)_spec_Issue_5_SAMs_for_web.pdf Although it's a bit difficult, and designed for A-level, I have a tutorial here that explains a bit more: kzbin.info/www/bejne/gZjGop1_gddsbac

[@badyahelamin8386]

Thank you verrrrry much

[@daniyalmansoor4130]

Thank you so much!

[@tutohowto5345]

you. are. amazing.

[@parthdedhia2050]

You are such a life saviour, love your explaination bro

[@fazlayj]

I bookmarked all your videos and gonna watch them tomorow,you have no idea how much you have helped me with these videos,thanks a ton!! You are great.

[@noeabud9640]

Hola te amo

[@bdady]

Thank u sm

[@umarchetty1]

Hi Ben, I really enjoyed your videos. I came across it by chance. I was teaching my son Atomic Physics. You are a great teacher. I guess your students love you. My son loves your videos and your voice. I will try and go through all your videos for the other sections. By the way, I have a question myself. In Nuclear fission, we all understand that if one neutron atom is captured by a Uranium unstable Isotope, the Uranium splits into two parts(daughters - where the word daughters come from, I don't know). My question is : where does this neutron come from. It is part of a nucleus somewhere, right? Or can neutron exists on its own? Thanks for an answer.

[@benaryder]

Thanks for your kind comments! I appreciate it. Regarding neutron sources, in chain reactions, these neutrons can come from other fission events. But to start off the chain reaction, a neutron source is often used, such as Californium-252.

[@nitish282]

In biology, when a cell reproduces without a mate, it is known as asexual reproduction. When one cell splits into two cells to reproduce, this type of asexual reproduction is called mitosis. Now, the two cells the mother cell had split into are called the daughter cells. Similarly, as the uranium atom splits into Thorium, the two Thorium atoms are known as daughter nuclei/isotopes.

[@aabhakid3432]

Thanks bestie

[@alastairsmith4279]

An excellent and engaging resource.

[@WajTalks101]

u R A BLOODY GENIUS!:D thankyouUUUU SOO MUCH U ROCK!:)

[@amaribnaislam]

hey do you have any colection on IGCSE edexcel chemistry?

[@thatiswhy1]

hey mann ur awsomeee!!!! thnxxx

[@Mirroredsmoke]

U r amazing!!!

[@HenryWarner]

this really helped, thanks

[@zerminashakoorabdulshakoor1416]

Can you make vid on solving rest papers n past papers

[@benaryder]

I have done a few ...

[@JacobGoldstein1]

Thank you so much!

[@sophiewilkinson8609]

+Ben Ryder Please could you define 'radiation'? Thank you :)

[@benaryder]

+Sophie Wilkinson Sure - radiation generally, is the emission of energy from something. This is usually in the form of electromagnetic waves, like light or heat radiation (infrared). However it is also used to define energy being carried by particles, like alpha or beta particles. I guess that would be good in the revision video!

[@MaisieIsAwesome]

+Ben Ryder Ben you are a G

[@benaryder]

Is that G for God, or G for Gangsta? Thanks, I think.

[@amaturrahman9843]

Ben Ryder more like "Great" probably