A report on Atom
Smallest unit of ordinary matter that forms a chemical element.
- Atom115 related topics with Alpha
Chemical element
29 linksA chemical element is a species of atoms that have a given number of protons in their nuclei, including the pure substance consisting only of that species.
Electron
28 linksSubatomic particle whose electric charge is negative one elementary charge.
Subatomic particle whose electric charge is negative one elementary charge.
The Coulomb force interaction between the positive protons within atomic nuclei and the negative electrons without, allows the composition of the two known as atoms.
Proton
25 linksStable subatomic particle, symbol, H+, or 1H+ with a positive electric charge of +1e elementary charge.
Stable subatomic particle, symbol, H+, or 1H+ with a positive electric charge of +1e elementary charge.
One or more protons are present in the nucleus of every atom.
Hydrogen
25 linksChemical element with the symbol H and atomic number 1.
Chemical element with the symbol H and atomic number 1.
For the most common isotope of hydrogen (symbol 1H) each atom has one proton, one electron, and no neutrons.
Quantum mechanics
21 linksQuantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.
Neutron
26 linksSubatomic particle, symbol or, which has a neutral charge, and a mass slightly greater than that of a proton.
Subatomic particle, symbol or, which has a neutral charge, and a mass slightly greater than that of a proton.
Protons and neutrons constitute the nuclei of atoms.
Atomic nucleus
17 linksThe atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
Chemistry
16 linksScientific study of the properties and behavior of matter.
Scientific study of the properties and behavior of matter.
It is a natural science that covers the elements that make up matter to the compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.
Molecule
14 linksA molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion.
Chemical bond
13 linksA chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.