More Stuff About People Flashcards
Suggested that matter is made up of atoms
Dalton
Proposed that atoms contain negatively harmed particles called electrons
Thomson
Discovered the nucleus and its subatomic particles.
Rutherford
Suggested that the nucleus was made up of positively charged particles called Protons and particles with no charge called neutrons
Rutherford
Proposed that electrons are located in shells around the nucleus
Bohr
Subatomic particles
All atoms are made up of 3 subatomic particles: protons, neutrons, electrons
Proton charge
Positive
Neutron charge
Neutral
Electron charge
Negative
What forms the nucleus?
Protons AND neutrons cluster together to down the nucleus of an atom
Suggested atoms cannot be created, destroyed, or divided into smaller particles
Dalton
Suggested electrons occupy specific energy levels or shells
Bohr
Suggested most of the mass of the atom is in the tiny, sense, positively barged nucleus
Thomson
Suggested most of the atom is empty space
Rutherford
Suggested all matter is made of small particles called atoms
Dalton
Suggested all atoms of the same element are identical
Dalton
Suggested atoms contain negatively charged particles
Thomson
Suggested that the nucleus contains positively charged particles called protons and particles with no electrical charge called neutrons
Rutherford
Suggested different elements combined together forms compounds
Dalton
Suggested electrons move around a central nucleus
Rutherford
Discovered he nucleus
Rutherford
Suggested that all matter is made of atoms
Dalton
Proposed the “raisin bun” model of the atom
Thomson
Observed streaks of negatively charged particles in gas discharge tubes
Thomson
