Lesson: 45
Unit: 1
State Content Standard: atomic and molecular structure
Lesson Title: atomic structure:mass and number
Textbook page: Pages 59
Chemistry Passport: Page 59
Atoms are the fundamental (basic) unit of matter which has the characteristic properties of a chemical element. Keep reading about atoms.
Subatomic particles
The subatomic particles are protons, neutrons, and electrons; Or it could be the electron and the nucleus.
Subatomic particles are the basic units of an atom. The earliest models of the atom described three subatomic particles: protons, electrons, and neutrons [1]. The nucleus hosts the two biggest (size) subatomic particles (protons and neutrons) while the electrons orbit around the nucleus.
Fundamental Particles versus Subatomic Particles
Particles that cannot be broken into smaller pieces are known as fundamental particles. Most students are introduced to the structure of atoms as being composed of three key components: protons, neutrons, and electrons. In which protons have a positive charge, electrons have a negative charge, and neutrons are neutral. The majority of the mass is located in the nucleus (protons and neutrons).
The three subatomic particles, though, are not fundamental or elementary because protons and neutrons can be broken up into smaller particles known as quarks. Therefore, fundamental particles are quarks (which combine to make protons or neutrons) and electrons.
The difference between subatomic and fundamental particals is that fundamental particals are anout the four elements that make this world, earth, water, air, and fire. while subatomic particles are the particles inside an atom like proton, neutron, and electron.
Protons
a proton is a positvily charged particle, and a relitive mass of 1836. Protons are also none as atomic number.
Discovered by Ernest Rutherford between 1911 and 1919, protons are positively charged subatomic particles located in the nuclei of an atom. The proton is a baryon and is considered to be composed of two up quarks and one down quark.
Neutrons
A neutron is a particle that is neutral or a particle with no charge, it has a relitive mass of 1839.
Neutrons are a subatomic particle with mass but no charge. The neutron is a baryon and is considered to be composed of two down quarks and one up quark.
Electrons
An electron is a negativly charged particle with a relitive charge of 1 and is also found in the atomic number.
The electron is a negatively charged subatomic particle discovered by J. J. Thomson. The Irish physicist George Stoney introduced the term in 1891. [2]
Quarks
Quarks are particles that make matter, like for example a proton and a neutron, they both are two main particles that make up this world. there are three pares of family's that make six in all, they are up/down, charm/strange, and top and bottom.
Quarks are fundamental units described in the standard model of the atom. There are six different types of quarks, usually known as flavors: up, down, charm, strange, top, and bottom. CITATION REQUIRED
Atomic Nucleus
it's just another word for neucles, it just means a neucles in an atom, or protons and neutrons in an atom.
The Atomic Models
An atomic model is just a model of the atom, because we need a model to find out what is inside an atom.
Atomic models allow chemists to explain, describe, and predict scientific results. [3] A model is a representation of a set of observations and may be physical or visual.
Further Reading
References
- ↑ NDT Resource Center (n.d.) Subatomic Particles retrieved February 5, 2009, from http://www.ndt-ed.org/EducationResources/HighSchool/Radiography/subatomicparticles.htm
- ↑ Julian T. Rubin
- ↑ David Young
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