Definition of Atom What is an Atom? The atom is the smallest object that retains the properties of anelement. Atoms are composed ofelectronsand anucleus. The nucleus contains protons and neutrons. All atoms areelectrically neutral, because every atom has an equal number of electrons and protons...
Definition of an atom:Atoms are the smallest particles of an element that have the chemical properties of that element. Atoms are therefore extremely small (the hydrogen atom is the smallest) and are sometimes described as the "basic building blocks of matter". This description makes more ...
Define Ion (chemistry). Ion (chemistry) synonyms, Ion (chemistry) pronunciation, Ion (chemistry) translation, English dictionary definition of Ion (chemistry). n. An atom or a group of atoms that has acquired a net electric charge by gaining or losing on
Definition of Ion What is an Ion? An ion is an atom or molecule that carries an electric charge. Ions are identified by the use of a superscript to show the sign and size of their electric charge. Anions and Cations Negatively charged ions are called anions, and positively charged ions ...
The flame test is widely used as an analytical method in chemical sciences. It is commonly used to assess a particular salt or combination for the presence of a specific element. Electrons occupy low-energy ground states in their unexcited form. However, when an atom or ion is subjected to ...
amphoteric- substance capable of acting as either an acid or a base. amphoteric oxide- oxide that can act as either an acid or a base in a reaction to produce a salt and water. amu- atomic mass unit or 1/12th the mass of an unbound atom of carbon-12. ...
Boyle's description of corpuscular motion presages the kinetic molecular theory. The Chemical Atom An atomic theory based on chemical concepts began to emerge from the work of Antoine Lavoisier (1743–1794), whose careful quantitative experiments led to an operational definition of an element: An ...
It gives a quantum definition for atoms (open systems) in molecules, showing that they are bounded by zero-flux surfaces in the gradient vector field of the electron density. This remarkable result supports an important hypothesis in chemistry, which is the basis of chemistry as an experimental ...
A more technical definition of an alloy is 'a partial or complete solid solution of one or more elements in a metallic matrix'. Common examples of alloys include bronze, brass and steels. When alloys are specified, the specification often includes the ratios of the different metals in that ...
No matter what its physical state, water (H2O) is the same compound, with each molecule composed of two atoms of hydrogen and one atom of oxygen. However, if water, as ice, liquid, or vapour, encounters sodium metal (Na), the atoms will be redistributed to give the new substances ...