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Chad's Prep
United States
Приєднався 30 вер 2016
My goal at Chad’s Prep is to take the stress out of learning science. This channel provides video tutorials in general chemistry, organic chemistry, physics, and high school chemistry.
I’m Chad, and I've been helping science and pre-health students excel for more than two decades. I've spent the last 15 years managing the tutoring facility for the Chemistry department at one of the largest universities in the U.S.
My website, www.ChadsPrep.com, is the ultimate online resource for science students, offering courses in general chemistry, organic chemistry, biochemistry, and physics. My courses include self-paced video lectures, practice problems, and comprehensive study guides. I also have DAT & OAT practice tests.
I’ve made my courses very affordable because my goal is to help as many students as possible. Over 35,000 students have taken them since 2016.
🔔 Subscribe and hit the bell to get access to all my latest videos: ua-cam.com/users/ChadsPrep
I’m Chad, and I've been helping science and pre-health students excel for more than two decades. I've spent the last 15 years managing the tutoring facility for the Chemistry department at one of the largest universities in the U.S.
My website, www.ChadsPrep.com, is the ultimate online resource for science students, offering courses in general chemistry, organic chemistry, biochemistry, and physics. My courses include self-paced video lectures, practice problems, and comprehensive study guides. I also have DAT & OAT practice tests.
I’ve made my courses very affordable because my goal is to help as many students as possible. Over 35,000 students have taken them since 2016.
🔔 Subscribe and hit the bell to get access to all my latest videos: ua-cam.com/users/ChadsPrep
27.3 Nuclear Decay Processes and Energy of Nuclear Reactions | General Physics
Chad provides a lesson on the various spontaneous Processes of Nuclear Decay and on the Energy of Nuclear Reactions. The spontaneous processes of nuclear decay include alpha decay, beta decay (beta emission and positron emission), and gamma decay. In alpha decay (aka alpha emission), an alpha particle is emitted which lowers the atomic number by 2 and the mass number by 4. Alpha decay is most common among heavier nuclei. Two forms of beta decay are discussed: beta emission and positron emission. In beta emission a beta particle (i.e. an electron) is emitted from the nucleus along with an antineutrino. The net result is the conversion of a neutron to a proton which is reflected as an increase in the atomic number by 1 with no change in the mass number. In positron emission a positron (the antiparticle of an electron--effectively a positively charged electron) is emitted from the nucleus along with a neutrino. The net result is the conversion of a proton to a neutron which is reflected as a decrease in the atomic number by 1 with no change in the mass number. Gamma decay (aka gamma emission) is simply the emission of a gamma ray which is just a very high energy photon. The overall identity of the nucleus is unchanged. Gamma emission typically accompanies one of the other decay processes that leaves a nucleus in a high energy state.
In a nuclear reaction, there is a conversion between mass and energy (E=mc^2) and this difference in energy equivalence between the reactants and products is called the Q-value. Exothermic reactions release energy and have positive Q-values, while endothermic reactions consume energy and have negative Q-values. For an endothermic nuclear reaction to occur, one of reactant particles must be given some minimum amount of kinetic energy for the reaction to proceed. It is also demonstrated how to calculate this minimum kinetic energy.
00:00 Lesson Introduction
00:52 Alpha Decay
03:34 Beta Decay (Beta Emission and Positron Emission)
11:23 Gamma Decay
14:11 Energy of Nuclear Reactions and Q-value
Check out Chad's General Physics Master Course: courses.chadsprep.com/courses/general-physics-1-and-2
In a nuclear reaction, there is a conversion between mass and energy (E=mc^2) and this difference in energy equivalence between the reactants and products is called the Q-value. Exothermic reactions release energy and have positive Q-values, while endothermic reactions consume energy and have negative Q-values. For an endothermic nuclear reaction to occur, one of reactant particles must be given some minimum amount of kinetic energy for the reaction to proceed. It is also demonstrated how to calculate this minimum kinetic energy.
00:00 Lesson Introduction
00:52 Alpha Decay
03:34 Beta Decay (Beta Emission and Positron Emission)
11:23 Gamma Decay
14:11 Energy of Nuclear Reactions and Q-value
Check out Chad's General Physics Master Course: courses.chadsprep.com/courses/general-physics-1-and-2
Переглядів: 5 454
Відео
27.2 Kinetics of Radioactive Decay | General Physics
Переглядів 1,2 тис.2 місяці тому
Chad provides a thorough lesson on the Kinetics of Radioactive Decay. Radioactive decay undergoes exponential decay. The rate of decay is proportional to the number of radioactive nuclei, so as that number decreases, so does the rate of decay. The formulas describing the rate of radioactive decay are presented including the decay constant, a rate constant that is characteristic of a nuclide. Ha...
27.1 Introduction to Nuclear Physics | General Physics
Переглядів 1,3 тис.2 місяці тому
Chad provides an Introduction to Nuclear Physics. The lesson begins with an introduction to a variety of nuclear particles: alpha particles, neutrons, protons, beta particles (electrons and positrons), and gamma rays. Characteristics for each are provided including mass and charge. Atomic symbols are then reviewed, showing how the composition of a nucleus (number of protons and neutrons) can be...
26.3 Wave Functions and Atomic Orbitals | General Physics
Переглядів 1,7 тис.2 місяці тому
Chad provides a detailed lesson on Wavefunctions and Atomic Orbitals. Chad begins by describing that electrons do not occupy circular orbits as described by the Bohr model of the atom, but actually atomic orbitals. These atomic orbitals are regions of space with quantized energies that are representative of wave functions which are derived as solutions to the Schroedinger equation. The fact tha...
26.2 Borhr Model of the Atom and Atomic Spectra | Quantum Physics
Переглядів 1,5 тис.2 місяці тому
Chad provides a thorough lesson on the Bohr Model of the Atom and Atomic Spectra (line spectra) related to it. In 1905 Niels Bohr proposed a quantized model for the hydrogen atom the equations derived from which matched the absorption and emission spectra for hydrogen. The first tenet of his model was that electrons move around the nucleus in circular orbits. The second tenet is that only certa...
26.1 Blackbody Radiation, Photoelectric Effect, and de Broglie Relation | Quantum Physics
Переглядів 1,2 тис.2 місяці тому
Chad provides an introduction to Quantum Physics describing three areas where classical physics was insufficient to explain reality: Blackbody Radiation, the Photoelectric Effect, and the de Broglie Relation. Classical physics failed to explain the behavior of blackbody radiation at short wavelengths, termed the Ultraviolet Catastrophe. Classical physics predicted that the intensity of blackbod...
25.3 Relativistic Velocity, Momentum, and Energy | General Physics
Переглядів 1,3 тис.2 місяці тому
Chad provides a lesson on Relativistic Velocity, Momentum, and Energy. The lesson begins with a review of relative velocity from a Galilean perspective. But an object's relative velocity cannot exceed the speed of light, and for objects with velocities approaching the speed of light, relativistic effects must be factored in using an equation often termed the Relativistic Addition of Velocities....
25.2 Time Dilation and Length Contraction | Relativity | General Physics
Переглядів 1,2 тис.2 місяці тому
Chad provides a thorough lesson on Time Dilation and Length Contraction, two major points of the Special Theory of Relativity. For observers that are moving very fast (close to the speed of light) time slows down and lengths (or distances) contract in the direction of motion. Chad derives the time dilation formula, including the derivation of the Lorentz factor, and uses that to also derive the...
25.1 Introduction to the Special Theory of Relativity | General Physics
Переглядів 1,4 тис.2 місяці тому
Chad provides an Introduction to Einstein's Special Theory of Relativity. The lesson begins with the two postulates of the Special Theory of Relativity. The first postulate states that the laws of physics are the same in all inertial frames. An inertial frame is a frame in which Newton's 1st Law of Motion applies meaning there is no net force or acceleration acting upon an object. The second po...
24.4 Polarization of Light | General Physics
Переглядів 1,6 тис.2 місяці тому
Chad provides a lesson on the Polarization of Light. The lesson begins with the polarization of unpolarized light, and the formula for the polarization of unpolarized light shows that half of incident unpolarized light is transmitted through a polarizing filter. The formula for the polarization of already polarized light (Malus' Law) is then presented which shows that the amount of the incident...
24.3 Single Slit Diffraction and Diffraction Gratings | General Physics
Переглядів 1,5 тис.2 місяці тому
Chad provides a lesson on Single Slit Diffraction and Diffraction Gratings. The lesson begins with a derivation of the formula for determining the dark fringes in single slit diffraction. A single slit diffraction problem is then solved showing how single slit diffraction can be used to determine the wavelength of light. Next, Diffraction gratings are covered, and the formula for the bright fri...
24.2 Thin Film Interference | General Physics
Переглядів 2,5 тис.3 місяці тому
Chad provides a lesson on Thin Film Interference. When a thin film of a liquid is in between two other mediums, the reflected rays at the top and bottom surface of the film have a chance to undergo either constructive or destructive interference depending upon the thickness of the film and the wavelength of the light. For a given film thickness, some wavelengths will experience constructive int...
24.1 Double Slit Interference | General Physics
Переглядів 2,2 тис.3 місяці тому
Chad provides a lesson on Double Slit Interference. The lesson begins with a review of constructive and destructive interference which result when waves are in phase and out of phase respectively. The fact that light can exhibit the typical interference patterns seen with waves gave credence to the idea that light had wave like characteristics. In Young's Double Slit Experiment, coherent light ...
23.2 Lenses | General Physics
Переглядів 2,6 тис.3 місяці тому
Chad provides a thorough lesson on Thin Lenses that includes both Converging Lenses and Diverging Lenses. A real image is the result of the refracted rays intersecting at a common point after passing through the lens. A virtual image results when the refracted rays do not intersect at all, but appear to have originated from a common point from the back side of the lens. Images may also be eithe...
23.1 Mirrors | General Physics
Переглядів 3,8 тис.3 місяці тому
Chad provides a thorough lesson on Mirrors that includes both plane mirrors and spherical mirrors (both concave and convex mirrors). The lesson begins with plane mirrors (a.k.a. flat mirrors). For a plane mirror a virtual, upright image is located behind the mirror. The image distance is equal to the object distance, and therefore the magnification is equal to 1. A real image is the result of t...
22.1 Reflection and Refraction | General Physics
Переглядів 2,6 тис.3 місяці тому
22.1 Reflection and Refraction | General Physics
21.2 Electromagnetic Waves | General Physics
Переглядів 2,4 тис.3 місяці тому
21.2 Electromagnetic Waves | General Physics
21.1 RLC Circuits | General Physics
Переглядів 1,7 тис.3 місяці тому
21.1 RLC Circuits | General Physics
20.4 RL Circuits | General Physics
Переглядів 2,3 тис.4 місяці тому
20.4 RL Circuits | General Physics
20.3 Self Inductance and Mutual Inductance | General Physics
Переглядів 1,9 тис.4 місяці тому
20.3 Self Inductance and Mutual Inductance | General Physics
20.2 Generators and Motors | General Physics
Переглядів 2,1 тис.4 місяці тому
20.2 Generators and Motors | General Physics
20.1 Faraday's Law and Lenz's Law | General Physics
Переглядів 3,8 тис.4 місяці тому
20.1 Faraday's Law and Lenz's Law | General Physics
19.3 Magnetic Fields in Current Carrying Loops and Ideal Solenoids | General Physics
Переглядів 3,4 тис.4 місяці тому
19.3 Magnetic Fields in Current Carrying Loops and Ideal Solenoids | General Physics
19.2 Magnetic Forces and Currents | General Physics
Переглядів 3,6 тис.4 місяці тому
19.2 Magnetic Forces and Currents | General Physics
19.1 Introduction to Magnetic Fields and Forces | General Physics
Переглядів 4,8 тис.4 місяці тому
19.1 Introduction to Magnetic Fields and Forces | General Physics
18.2 RC Circuits | General Physics
Переглядів 2,8 тис.4 місяці тому
18.2 RC Circuits | General Physics
18.1 Kirchhoff's Rules and Complex DC Circuits | General Physics
Переглядів 3,2 тис.4 місяці тому
18.1 Kirchhoff's Rules and Complex DC Circuits | General Physics
17.3 Voltmeters, Ammeters, and Terminal Voltage | General Physics
Переглядів 1,9 тис.5 місяців тому
17.3 Voltmeters, Ammeters, and Terminal Voltage | General Physics
17.1 Current and Ohm's Law | General Physics
Переглядів 2,7 тис.5 місяців тому
17.1 Current and Ohm's Law | General Physics
For the example at 8:50, when ur rotating the substituents is the rotation always in a certain clockwise fashion?
OMG, I’m sorry for looking like I’m rude - I’m respectful, actually - but I realised that one way of teaching is when someone proudly presents the scientific results as they were their own original ideas, while other ones are teaching it by impersonating the elements of nature as cartoon characters with some intent, personality (“Oh, this Mr Atomic Core is so handsome” - said Miss Electron). Should I have enough knowledge to teach, I would teach science as if I, myself, would be trying to mentally cope with the inherent nonsense of the entire discoverable reality on every single working day of my life as a teacher...
Premium content 👌
Kind words - thanks!
Great 👍 pure teaching skill ❤
Thank you! 😃
Favorite UA-cam channel.
Wow - thanks!
in the first two body pulley problem, why does the g in the mg part not equal 9.8 but just 5g or 10g for instance?
THANK YOUU THIS HELPED ALOT
You're welcome - glad to hear it!
I've searched every chemistry video on youtube for this topic but non was able to explain as vastly as you have. You literally blew my mind i just had to immediately subscribe. Words can't explain how grateful I'm for your help on this topic. ❤❤
Glad you found us - Happy Studying!
Nice video, can you please do a video on cell potential but with a reaction that precipitates out a solid
I appreciate the playlist you created, but it's quite large with 227, 127, 167, or 123 videos. Could you make smaller, series-based playlists? It would be easier to follow.
The playlists are designed to follow the complete curriculum for a full year of each respective course. I've also arranged them at chadsprep.com by chapter with easy to navigate drop-down menus here: www.chadsprep.com/chads-general-chemistry-videos/ www.chadsprep.com/chads-organic-chemistry-videos/ www.chadsprep.com/chads-general-physics-videos/ www.chadsprep.com/chads-high-school-chemistry-videos/ You'll also find playlists for biochemistry and physical chemistry that are not on youtube. Hope this helps!
@@ChadsPrep Thank you for telling me about your website with the organic chemistry videos. Are all the lectures free, or are there any paid ones? If there are paid lectures, how can I access them?
HAPPY TEACHING, CHAD! GREAT CHANNEL!
Glad you think so!
this was so easy!
Excellent!
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thank you!! 😭
You're welcome!
Chad, you have re-ignated all of the semantic networks in my brain from O-chem and all of GenChem that I was reluctant to re-learn for a huge test. I cant thank you enough for your talent for teaching. I feel like im back at office hours.
Excellent - thanks for sharing and good luck on your test!
Just conceptually, why do we need to use a positive test charge or even a test charge at all to determine when the electric field will be zero?
You teach chemistry very well and deserve millions of subscribers and millions of views. Thank you for your hard work!"
Thank you
How would you compare the solubility of aluminum phosphate in water Vs different aqueous solutions (sodium acetate) (NH4NO3)
Early morning revision for exam 😅
All the best!
thank you sir
You're welcome
Every thing about simple harmonic motion according to essential physics
Explain e
Nice
Thanks
24:22 how can you throw a ball from 0m height?
Why is it 3 sin theta and 3 cos theta
I'm currently bingeing your videos for my upcoming exam. My professor is nice but tends to circumlocute quite a bit, I appreciate how you teach us exactly what we need to know without any extra fluff. You're the best!
Glad you like them and Happy Studying!
As a twin I am saddened after that story..
Remember to always travel in space with your sibling. No exceptions.
👌🏻👌🏻👌🏻
Thanks!
Wow, you explain it so clearly! I've seen other videos, but yours is concise, super clear, and realized little things I didn't before. Amazing! I'm preparing for orgo next semester, so I'm glad you made these videos. 😊
Glad you found us - Happy Studying!
Thanks for the best Chemistry Course ever!😊
You're welcome!
Thanks 😊
You bet!
you are the first ever best teacher of my life ,from sri lanka
Thanks from USA - Happy Studying!
Good tutor
Thank you
🎉 ANYONE FROM ETHIOPIA❤🇪🇹
Welcome from USA
congrats on 101,000 subscribers!
Thanks!
When the temperature goes up, randomness goes up. That's why people get all crazy when the weather is like 100+ degrees.
This really helped simply the concept, thank you!!
You're welcome!
for the last example, what happens to the other cl- ion (the one that doesn't get attached). does it attach to another molecule, or...?
God bless you, Chad. What you are doing with your chemistry lessons is truly a gift to the rest of us
Kind words - thank you and Happy Studying!
thank you for helping me :")))
You're welcome!
Thank you so much chad
You're welcome
Would you mind o share that what type of hybridisation is present in HF? Is it SP or SP2 or SP3? and please explain. TIA
Thanks Chad, You are a life saver!!!!! 😀
Very welcome!
thank you so much i learned how to do these diagrams incredibly fast I am truly thankful for this video!!!
Glad it helped!
How did you know all that???
Probably the same way for most - with lots of time and study.
thank you!!
You're welcome!
For the 2nd dimensional, first problem you tried to solve you said that the initial velocity was 50 when it's a 100? I'm a bit confused on that part
26:37 I thought we were solving for the magnitude of the average velocity, not just velocity. So, if our initial velocity is zero, wouldn't our average velocity be 30 mph? idk
I learned a lot from this lesson. Thanks, Chad.
Glad it was helpful!
LOVE THE SHIRT BOSS!
Thanks!