Mass defect and binding energy | Nuclear chemistry | Chemistry | Khan Academy

Using the mass defect to calculate the energy released when a helium nucleus formed. Introduction to the nuclear strong force.

Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.

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[henrik]

I disagree with the people who complain about the calculator taking too much time. It's good to see how the calculations are done as it helps with the understanding of it .It also gives you a chance of thinking about what was said and making sense of it in your head.

[veenapanini]

4:29 mass defect
5:51 conversion
10:43 nuclear binding ey

[Rainbow-duln]

loving the video, buh the calculator takes tym, it b better if there were Done b4

[hjalmarlevander]

Thank you, I been looking for a video like this for probably about an hour now and this finally cleared my confusion

[chiramana_]

As many of them are confused regarding electron mass exclusion, the species that is shown up here is a Helium nucleus which was obtained from alpha decay. Hence, it has no electrons in it. Watching the video on types of decay can provide more clarity.

[huzaifasaleem]

I love you yar. You really saved my life. It helps me very much in my exams practice. Thank you so much

[dhananjaleeelagalla]

This is sooo helpful!
Thanks a lot :)

[WRX_Diaries]

This video was so amazingly helpful, thank you!!

[sruthijayadevan]

Thank you so much for the great explanation! :)

[utopianice]

Thank you for the explanation, I can now say that calculating the mass defect is more intuitive. There is one question I'd like to ask, if you don't mind. Should the energy which has been released have a "-" sign in front of it? Some textbooks I've read have instructed the reader to do so, while others don't seem to really care.

[yume-eu]

Learnt a lot from this video, but I have a quick question:
Why is it that the neutrons and protons must lose mass and convert it into energy in order to become a nucleus? Sorry, I'm just starting to dive into all this ^ ^;

[saharnaseer]

Thank you so much Sir
This is helpful

[crazyboy]

What is the difference between mass defect and mass difference

[shashankchandra]

In Nuclear fission When the neutron hits the nucleus of u-235 some particle's(either one of proton's or neutron's mass in u-235 nucleus is bieng converted to energy right??)But the question is is it one of proton in u-235 nucleus or one of neutron in u-235 nucleus???

[NixterTheCool]

This proved that nuclear fusion can create energy in return for a loss of mass from the quarks. I fail to understand (considering nuclear binding energy) why does nuclear fission also create energy? A simple assumption would be that fission would eat up the binding energy, and give none in return.

[richatiwari]

next video of calculating mass of an object plz

[zdanmubita]

Is it correct for mass defect to be negative?

[imnothingbutastreetcat]

How would you know the number of protons and neutrons if the only available data is the amu of the element?

[MrRaisin]

do you not have to worry about electrons??

[satrickptar]

Shouldn't we also need to include electron mass in the predicted?