Why is a non-permanent, but long lasting, magnet called a permanent magnet? Permanent magnets can lose their magnetism if they are dropped or banged on enough to bump their domains out of alignment. Can you turn something back What happens when a magnet is cut in two? Does the strength of an electromagnet depend on the number of turns of wire?
If you have two magnets Does the size of a magnet make it stronger? How are magnets made? How does the shape of a magnet effect it's magnetic field? Why does rubbing plastic and wool together create electricity?
Matter, elements, and atoms
Where does the word atom come from and who first used this word? Are Democritus' theories of atoms still relevant today?
How do people really know that atoms exist even though they can't see them? If there is no way in the world to see an atom, then how do we know that the atom is made of protons, electrons, neutrons, the nucleus and the electron cloud? How do the elements on the element table get their chemical symbols?
Was "beauty" a quark name they used in the past? Can you explain why the United States uses Fahrenheit instead of Celsius? If the energy could be directly converted to matter, how long would it take a person on a bicycle-type generator to create a single atom? Is there a way to tell how many atoms are in a certain object? Could you please explain density? What is it? How do you determine how many protons, neutrons, and electrons are in an atom? What would happen to the atomic number and the electric charge of an atom if two neutrons escaped the nucleus?
What are vector quantities and how do they work? How does the radioactivity of an atom affect the body? If radioactivity is so dangerous why do we use it to destroy cancers, and could the treatment cause more damage? Is it possible for an element to emit more than one kind of radiation? How many neutrons can you add to an atom without it getting unbalanced? Are nitrogen, arsenic, and tantalum radioactive? Someone told me that Cherenkov radiation is analogous to breaking the sound barrier. In the latter, an object travels faster than the speed of sound If energy is formed by a generator, how does the generator form the energy?
Do rotating magnets create energy? Where can I find more information on this subject?
- The Atomic Theory of Matter - Chemistry LibreTexts.
- The 25 Best Time Management Tools & Techniques: How to Get More Done Without Driving Yourself Crazy.
- BBC - Earth - How do we know that things are really made of atoms?.
My science fair project is on how prisms separate light. What is light made of? Is possible to make a real light saber like in the Star Wars movies? What's used to steer Jefferson Lab's electron beam?
Monosaccharides polymerize to yield polysaccharides.
How much money does it cost a year to run Jefferson Lab? Do you get funds from an entrepreneurship? Why did it take so long to build Jefferson Lab? Why was Jefferson Lab built in Newport News? What would happen if a part of the accelerator or one of the magnets were to break or come off? Would the electrons come out of the machine How big around is the tunnel at Jefferson Lab and what do you do in it? What process do you go through before you start the experiments? Do you use a hypothesis?
Where and how do you get your electrons for your accelerator? What kind of machine or process did they use to split the first atom all those years ago Why do you need high energy to look at or observe quarks? Since the accelerator at your facility is linear and can't always get as much energy How did you make the detectors work in Halls A, B and C? How can you tell if a new type of element has been created, especially if only a few atoms of it were created and if they only existed for a millisecond?
Does baking soda lower water temperature? If so, why? Do liquids freeze at the same temperature? Why doesn't oil freeze? In space we feel weightlessness because the earth's gravity has less effect on us. Why do we not see the effect of the gravitational force between the various objects Is there anything colder than liquid nitrogen? If you jumped into a pool of liquid oxygen, would your body instantly crystallize?
What is a material with a freezing point above 0 degrees Celsius?
Glossary of Terms - The Physics of the Universe
Science Education Privacy and Security Notice. Basic Information What is an atom? What are atoms made of? What is an element?
How many elements are there? What is a mixture? Atomic Structure How do I find the number of protons, electrons and neutrons that are in an atom of an element? How do I make a model of an atom? What does the element krypton look like? History Who discovered the element gold, silver, copper, neon, etc?
Atoms and Matter What is an atom? What is the biggest atom? The smallest atom?
How do atoms form? Does gravity affect atoms? Can you crush atoms? Is there an atom that does not have neutrons? How fast do electrons move? What do we use to measure mass? Is matter everywhere?
How do you prove air is matter? Why don't atoms weigh anything? What is plasma? What is the smallest particle of matter known? Are quarks confineable for study? What is a vacuum? Is it matter? Elements and the Periodic Table Why is hydrogen's atomic number 1? Who discovered the elements? Is krypton dangerous? How do you separate tungsten from its ore? Electricity and Magnetism What type of charge is produced when an electric field separates positive and negative charges?
What is an electric current? How do you explain electrical resistance? Do you know what an electromagnet is? Which jobs use electromagnets?
History of Science Where does the word atom come from and who first used this word?