Atomic History
Daltons Atomic theory
Negatively charged, surrounding the nucleus
electrons
Single pure substances
Elements
How compact a substances
Density
All of the protons and neutrons added up
Atomic mass of an element
Gold foil experiment
Rutherford
Positively charged in the nucleus , 1 amu
Two substances has been chemical combined in a fixed whole number ratio
Compounds
The ability of a substances to be formed into sheets
Malleable
All of the protons in an element
atomic number
Atoms are mostly empty space but have a dense center with positive protons
Rutherford
Neutron
Two or more things that have been physically combined in an uneven way
Heterogenous mixture
The ability of a substance to be pulled into wires
Ductile
C-14, what does the 14 stand for
The atomic mass of the isotope
Cathode Ray tubes, electrons are negatively charged
Thompson
Have a distinct amount of energy
Electrons in energy levels
Two or more things that have been physically combined in an even way
Homogenous mixtures
dissolve
The point when a liquid becomes a solid or solid becomes a liquid
Melting Point and freezing point
Electrons live in energy levels on the outside of the nucleus
Bohr
Cloud like spheres on the outside of atoms
Electron Orbitals
The same elements that have a different mass because of a different number of neutrons in the nucleus
Isotope
The ability of a substance to carry an electric current
Conduction
The point when a liquid becomes a gas or a gas becomes a liquid