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Atoms

36

QuestionAnswer
LPD is important because.... supported Dalton's theory
negatively charged particles that came from the inside of atoms cathode rays
negative subatomic particles electron
electrons spread evenly across the atom like pudding is across a plate Plum Pudding model
What did democritus discover invisible units called atoms
what did Dalton discover that atoms cannot be divided (can be turned into compounds)
which theory won and why Dalton's because his was based on experimental evidence
Chemical compounds always have the same elements and exactly seem proportion (weight or mass) Law of definite proportions (LDP)
what do energy levels act like elevator
which particle acts like waves when orbiting electron
high probability of finding electrons orbital
chemical properties of atom valence electron
when jumping levels gains or loses energy
unit of light photon
1 particle Potiumm
two particles but different deuterium
3 particles 2 the same tritium
unstable isotopes that are used for medicine radioisotope
neutrons in isotope mass-atomic
energy levels and location cant be predicted modern models of an atom
each element has... a unique number of protons
atoms are held together by electric force
how to get atomic number #protons
mass protons +neutrons
same protons different neutrons in two elements compared isotope
what did Rutherford discover nucleus
models of atoms change with time bc more things are being discovered
3 characteristics of atoms mass charge location
what particles are in the nucleus protons and neutrons
electrons are ____ than the ones in the nucleus smaller
proton charge positive
neutron charge neutral
electron charge negative
what does the color determine wavelength
firework color depends on compounds used for creation
Created by: user-1868602
 

 



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