- A and W: always add acid to water
- accuracy: the closeness of measurements to the correct or accepted value of the quantity measured
- bohr: electrons have specific spaces, orbits are elliptical like planets areound the sun, electrons give energy off when the jump back and forth between energy levels
- chadwick: Discovered the neutron
- chemical properties: ability of a substance to undergo a change that transforms it into a different substance
- chemical reaction: solid formed, color change, heat given off, a gas formed
- crooke: invented crookes tube and tested cathode rays
- dalton: atomic theory in 1808
- density: mass/volume
- electron: proton
- flammability: red msds
- fluid: substance that can flow and therefore take the shape of its container; a liquid or gas
- health: blue msds
- heisenberg: proposed heisenberg's uncertainty principle
- heisenberg's uncertainty principle: states that it is impossible to determine simultaneously both the position and velocit of an electron or any other particle
- isotope: atoms of the same element that have different masses
- millikan: oil drop experiment charge to mass ratio
- other warning: white msds
- physical properties: characteristic that can be observed or measured without changing the identity of the substance
- precision: a closeness of a set of measurements of the same quantity mode in the same way
- proton: atomic number
- protons and neutrons: mass number
- reactivity: yellow msds
- rutherford: discovered the nucleus in 1914. Proposed atoms are mostly empty space, atmos have a very dense positive core, electrons are found outside the dense nucleus
- schroninger: energy levels 1 - 7, spdf, orbitals contain 2 electrons spinning in opposite directions
- smallest decimal: addition and subtraction
- smallest# of significant digits: multiplication and division
- thompson: discovered the electron
- vapor: the process by which a liquid or solid changes to a ---> gas
Chemistry Review