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Particle Physics
Relatively recent experimental results have confirmed what philosophers throughout history had theorized all along; that all matter is made up of elementary particles. Those curious about this cutting-edge field of physics known as particle physics should post their questions here, including those about fundamental particles, fundamental forces, Grand Unified Theories, and the extraordinary devices that have been or need to be engineered to research them.
3,842 Questions
What statement matches a subatomic with its charge?
Protons have a positive charge, electrons have a negative charge, and neutrons are neutral.
Why do electrons jump when heated?
electrons jump energy levels becouse each level has a specific amount of energy needed inorder to be in that level. when an electron gets enough energy it jumps to the next level it can possible be in with that amount of energy.
How are the electrons distributed around the nucleus of the atom?
Classically, the electrons are in fixed orbits around the nucleus and are equidistant from each other in the same orbit, because of electronic repulsion. Quantum mechanically, their locations and speed cannot be exactly determined simultaneously. The best way to describe the configuration is electron clouds and orbitals. Please see the related link.
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What is made when matter and antimatter collide?
They annihilate each other, releasing a relatively large quantity of energy, which can be calculated using the formula e=mc2, where e is the released energy in joules, m is the mass of the particles in kilograms, and c is the speed of light in metres per second
Who discovered each subatomic particles?
- Protons
- discovered in 1886 by the German Physicist Eugene Goldstein using a cathode ray tube
- a proton possesses one unit of positive charge and a mass of 1.673 x 10-24g
- Electrons
- discovered in 1897 by the English Physicist J.J. Thompson
- an electron posessess one unit of negative charge and has a mass of 9.109 x 10-28g
- Neutrons
- discovered in 1932 by the English Physicist James Chadwick
- a neutron is neutral and has a mass of 1.675 x 10-24g
Does hexane have any unshared electrons?
A hydrogen atom can lose its only electron in an ionic bond. The atom would have no electrons. Actually the correct answer is No.
Radiation consisting of a single electron?
A radiation consisting of a single electron is known as beta radiation. This type of radiation occurs during beta decay when a neutron transforms into a proton, electron, and antineutrino. Beta radiation is commonly emitted by radioactive substances and has the ability to penetrate materials and cause ionization.
What are the three subatomic models?
The three subatomic models are the plum pudding model, the nuclear model, and the current model known as the quantum mechanical model. These models describe the structure of the atom and the arrangement of subatomic particles within it.
What is the electrical charge of a neutron and its mass?
A neutron has no electrical charge (it is electrically neutral) and has a mass of approximately 1.675 x 10^-27 kilograms.
The electron is the lightest particle in the list. A proton is 1836 times more massive than an electron. Neutrons are just slightly more massive than a proton, and an alpha particle consists of two protons and two neutrons.
Protons and neutrons in the nucleus add up to give the?
The number of protons added to the number of neutrons in a nucleus give that isotope's atomic weight.
How do you call a subatomic particle that has no mass and a negative charge?
No such particle exists.
All particles with charge also have mass -- no exceptions.
Every particle with zero mass also has zero charge -- no exceptions.
Which one of the following is NOT the name of a quark charm strange up or below?
Charm is NOT the name of a quark; charm, strange, up, and down are all types of quarks.
A neutron does not have an electrical charge but it has a mass similar to that of a proton, about 1.675 x 10^-27 kg.
Does an electron deflect greater than a proton in a magnetic field?
The Lorentz force, F = q(v x B), where q = electric charge, v = velocity of the charge particle, and B = magnetic field.
The direction of the charge particle is determined by v. F, v, and B are vectors, and follow the right-hand rule. First, point your right arm straight in the direction the particle is traveling, palm/hand flat with the thumb pointing at a right angle to the other 4 fingers; second, curl your right hand (bend at the wrist) toward where the magnetic field is pointing. The thumb indicates the direction of the force.
For example, assume the magnetic field is pointing perpendicularly out of this page (a plane) toward you. Assume the charge particle carries a positive charge and is traveling up the page in the beginning. Then the force acts on the particle as a centripetal force and pulls the particle toward the right. The net result is that, in an ideal situation, the particle rotates in a clockwise direction on the plane. A negative particle will do so in a counterclockwise fashion.
Do protons have the same mass as plasma particles?
yes. plasma is just a physical state of matter and therefore that matter will have a mass. its what stars are made of; superheated hydrogen. it also exists in fusion accelerators (PBFA - particle beam fusion accelerator) or at the instance that lighting strikes and super-heats the air around the flowing current.
Why subatomic particles are not building blocks of matter?
Matter actually is made of sub-atomic particles. It would be perfectly reasonable to describe sub-atomic particles as the building blocks of matter. You might imagine that you have to assemble the sub-atomic particles into atoms first, and then use the atoms as your building blocks, but lots of things are not made of atoms; for example, you do not find atoms in the sun, which is so hot that atoms disintegrate into a plasma of atomic nuclei and free electrons.
Which subatomic particle changes when an atom becomes an ion?
When an atom becomes ionized, it gains or loses electrons (usually one).
What does pooled electrons mean?
electrons are no longer localized on a single atom, but delocalized over the entire metal; the positively charged metal atoms are then attracted to the sea of electrons, holding the metal together
The reason that protons are positive and neutrons have no charge is owed to the fact that quarks, which make up these particles, do not have integral charge. The charge of an up quark is +2/3, and the charge of a down quark is -1/3. When the charges of the quarks are added for the particles, we get the following:
Proton = up quark + up quark + down quark = 2/3 + 2/3 - 1/3 = 4/3 - 1/3 = 3/3 = +1
Neutron = up quark + down quark + down quark = 2/3 - 1/3 - 1/3 = 2/3 - 2/3 = 0 (zero)
Is there anything smaller than a neutrino?
Depends what you mean by "smaller."
The mass of a photon is smaller than even that of a neutrino.
At a sub-atomic level, concepts like "volume" or "size" become almost meaningless, so it is difficult to say whether the "size" of a neutrino is greater or less than that of, say, an electron.
What subatomic particles contribute to the mass of?
The atomic mass is the sum of the number of protons and the number of neutrons found in each atom of that element (electrons do not contribute). They are sometimes seen on periodic tables to have a decimal in the atomic number, this is for elements with more than one common isotope (an isotope of an element is the same number of protons but with a different number of neutrons), in which case an average of the common isotopes can be used.
Can an electron be further divided?
No, an electron is considered a fundamental particle and is not believed to be further divisible into smaller components. In the Standard Model of particle physics, electrons are classified as point-like particles with no known internal structure.
Can electrons collide with each other?
Yes, electrons can collide with each other due to their charge. When two electrons come too close, they can repel each other because they have the same charge. These collisions can affect the behavior and properties of materials in various ways.
What subatomic particle makes an element unique?
The number of protons is unique for every element.
Varying the number of neutrons will give you an isotope of the same element.
Varying the number of electrons will give you an ion of the same element.
