comes from Greek word atoms, means "unable to cut"; the basic unit of matter
at the center of the atom, formed by protons and neutrons bound together
a negatively charged particle (-) with 1/1840 the mass of a proton
a pure substance that consists entirely out of one type of atom.
atoms of the same element that differ in the number of neutrons they contain.
a substance formed by a chemical combination of 2 or more elements in definite proportions.
formed when one or more electrons are transferred from one atom to another.
positively and negatively charged atoms
forms when electrons are shared between atoms
the smallest unit of more compounds
Van Der Waals forces
A slight attraction between the oppositely charged regions of nearby molecules
an attraction between molecules of the same substance
an attraction between molecules of different substances
a material composed of two or more elements or compounds that are physically mixed together but not chemically combined.
when components are evenly distributed throughout the solution.
the substance that is dissolved.
the substance in which the solute dissolves.
a mixture or water and non dissolved material.
indicates the concentration of H ions in solution
any compounds that forms H ions in solution
a compound that produces hydroxide ions in solution
weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH