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Grade 10 Mathematics
Grade 10 Mathematics
Grade 10 Mathematics
Grade 10 Mathematics
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Scientists at the University of California Los Angeles have found a way to create stunningly detailed 3D reconstructing of platinum nanoparticles at an atomic scale. These are being used to study tiny structural irregularities called dislocations.
Read the paper here: http://dx.doi.org/10.1038/nature12009
Sign up for the Nature Briefing: An essential round-up of science news, opinion and analysis, free in your inbox every weekday. https://go.nature.com/371OcVF
Mr. Andersen shows you how to draw Lewis Dot Diagrams for atoms and simple molecules.
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Mr. Andersen explains the basics of balancing chemical equations. A visual guide shows you how to change coefficients to balance the atoms in reactants and products.
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How to memorize the periodic table 10X faster - Video 1. Start with the first 20 elements at https://www.memorize.academy/first-20-elements and then go for the entire periodic table of 118 elements at https://www.memorize.academy/m....emorize-the-periodic
How do you memorize the periodic table in the fastest and easiest way possible? You use the natural power of your visual memory.
We offer an easy way to memorize the periodic table. Memorization of the periodic table with our innovative animated video series takes just hours, so memorize the elements now!
Most people only know the typical techniques to memorize using your verbal memory – acronyms, acrostics, rhymes, ****ociations and songs. Those techniques can be great for remembering small amounts of information, but they don’t take advantage of the dramatic improvements to your recall when you activate your visual memory.
We’ll begin by picturing a typical poster or chart of the periodic table. There are many small, colorful squares, each with a name, number and symbol of an element, and together they create a large irregular shape.
This image will act as an anchor in your memory, holding down the chain of images which link together all the elements.
Now we’ll take that colorful poster and attach it to the first element. Picture that poster of the periodic table and imagine it’s wrapped around a water hydrant.
Why a water hydrant?
1. Hydrogen
The 1st element in the periodic table is Hydrogen. Hydrogen sounds similar to hydrant and that’s how you’ll be reminded of it. Picture a water hydrant you see on the sidewalk. It’s short, stubby, red, and looks strong. The hydrant is like a little man with a small hat on top and stubby arms sticking out the side.
Imagine that hydrant with the chart of the periodic table wrapped around it. When you think of the chart of the periodic table, you’ll picture it wrapped around a water hydrant. Because hydrant sounds similar to hydrogen, you’ll know the 1st element in the table is Hydrogen.
2. Helium
The 2nd element is Helium. If you’re like me, when you think of Helium, you automatically think of a helium balloon. When you let it go, it’s the type that floats up into the sky. Now imagine an enormous helium balloon. Make it the size of a car and picture it attached to the water hydrant. Because the helium balloon is so big and has so much lifting power, it starts to lift the water hydrant up off the sidewalk. Together they slowly float up into the air and away into the sky. Now, when you visualize the helium balloon floating upwards, you’ll know the 2nd element is Helium.
3. Lithium
The 3rd element is Lithium. Lithium sounds a bit like “lithp”. People that have a lisp – a type of speech impediment – aren’t able to pronounce “lisp” and say “lithp”. Let’s pretend the large helium balloon has a lisp. It also has a small hole in it, causing the balloon to slowly deflate. Usually a balloon with a hole in it will make a slow “ssss” sound, but because this balloon has a lisp or “lithp”, it makes a “thhh” sound. Visualize the large balloon slowly deflating making a “thhh” sound. When you think of the balloon’s “lithp”, you’ll be reminded of the 3rd element, Lithium.
4. Beryllium
The 4th element is Beryllium. If you say Beryllium slowly, it sounds like “bee really yum”. Picture your slowly deflating balloon. Imagine an enormous bumble bee lands on the balloon. The bee is the size of a football and has bright yellow and black stripes and buzzes loudly. The bee licks the balloon to have a taste and says, “that’s really yum!” It really likes the taste of the balloon. When you picture the bee licking the balloon, you’ll think, “bee really yum”, and be reminded of the 4th element, Beryllium.
5. Boron
The 5th element is Boron. We can break up the word Boron into “bore” and “on”. The word “bore” can mean to drill a hole. Picture now the bee, after tasting the balloon. It uses its stinger, pierces the balloon and starts to spin around in a drilling motion. The bee has landed on the balloon, tasted it, and now it’s started to “bore on” the balloon. When you picture the bee begin to bore on the balloon, you’ll remember the 5th element, Boron.
How to balance chemical equations. We'll start out with examples that show the concepts behind balancing chemical equations. We will start with a word equation, and then write a chemical equations, and then visualize the atoms and molecules and how they change. To figure out if the equations is balanced, we look at the number and type of atoms on each side of the arrow. If the number and type of atom is not the same on both sides, the equation in unbalanced. We need to change the number of one or more of the compounds in order to get the atoms to balance. We do this by placing coefficients (numbers) in front of each of the compounds. When balancing equations, you cannot ever change the subscripts of a compound.
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This video is about using Bohmian trajectories to visualize the wavefunctions of hydrogen orbitals, rendered in 3D using custom python code in Blender.
REFERENCES
A Suggested Interpretation of the Quantum Theory in Terms of "Hidden" Variables. I
David Bohm, Physical Review, Vol 85 No. 2, January 15, 1952
Speakable and Unspeakable in Quantum Mechanics
J. S. Bell
Trajectory construction of Dirac evolution
Peter Holland
The de Broglie-Bohm Causal Interpretation of Quantum Mechanics and its Application to some Simple Systems by Caroline Colijn
Bohmian Trajectories as the Foundation of Quantum Mechanics
http://arxiv.org/abs/0912.2666v1
The Pilot-Wave Perspective on Quantum Scattering and Tunneling
http://arxiv.org/abs/1210.7265v2
A Quantum Potential Description of One-Dimensional Time-Dependent Scattering From Square Barriers and Square Wells
Dewdney, Foundations of Physics, VoL 12, No. 1, 1982
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
Grade 10 English
