Subatomic Particles Ė particles smaller than an atom
Ex) Neutrino Ė no charge and less mass than electron!! (Travel close to speed of light!!!!)
Meson Ė mass somewhere between an electron and proton
- made of a quark and an anti-quark
An electron is a lepton
Baryons - relatively larger subatomic particles
ex) Protons, neutrons & hyperons (mass greater than neutron)
Baryons are made of smaller particles called quarks (see ref.)
A lithium atom consists of 3 protons, 4 neutrons, and 3 electrons. This atom contains a total of
a) 9 quarks
and 7 leptons
d)21 quarks and 3 leptons
Each subatomic particle
(same mass, opposite charge)
The ďantiparticleĒ of an electron
During beta decay, a neutron decays into a proton, an electron, and an electron antineutrino. During this process there is a conversion of a
n --> p + e + neutrino
(1) u quark to a d quark
(2) d quark to a meson
(3) baryon to another baryon
(4) lepton to another lepton
(3) baryon (neutron) to
Ex 3) Which combination of quarks could produce a neutral baryon?
(1) cdt (2)
Ex 4) Which combination of quarks would produce a neutral baryon?
(1) uud (2) udd (3) -u-ud (4) -udd
What does this symbol mean?
Anti Up Quark
Same size as an up,
What are we really made of?
http://www.mentalfloss.com/blogs/archives/ --brought to you by mental_floss!Read the full text here:
Image taken by Peggy Parigoris at Brookhaven National Laboratory.
You can learn a lot about the parts of a nucleus by creating a high speed collision between two nuclei and observing the resulting debris. Since the collision is made to occur within a magnetic field, we are able to identify the charges of the subatomic particles produced by observing the direction in which they curve.
©Tony Mangiacapre., - All Rights