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Breakout Box Clue Sheet

Across
Stream of electrons leaving the negative electrode moving to the anode
States the number of protons of each atom of that element
Total number of protons and neutrons that make up the nucleus of an isotope
Made up of protons and neutrons
Thomson's model for the atom
Discovered law of definite proportions
One mole of atoms measured in grams
Made up of protons, electrons, and neutrons
Down
6.02x10^23 particles
Atoms that have gained or lost electrons
Determine an atom's identity
Believed in the plum pudding model; used radioactivity
Atoms of the same element that have different masses; number of protons must be the same; number of neutrons are different
1 mole=molar mass=6.02x10^23particles
Discovered law of conservation of mass
Came up with the name for electrons
Discovered law of multiple proportions
Positively charged pieces; helium atoms minus electrons
A bunch of atoms; the answer to the lock