The Atom / Atomic Theory Flashcards
who suggested that matter is made up of atoms?
Dalton
who proposed that atoms contain negatively charged particles called electrons?
Thomson
who discovered the nucleus and it’s subatomic particles?
Rutherford
who suggested that electrons are located in shells around the nucleus?
Bohr
electrons have different amounts of _________.
energy
what can electrons do?
jump back and forth between energy levels
All atoms are made up of three _________ __________.
subatomic particles
what are the three subatomic particles?
protons, electrons, and neutrons
what subatomic particles cluster together to form the nucleus of an atom?
protons and neutrons
Who discovered the nucleus?
Rutherford
Who suggested that all matter is made up of atoms?
Dalton
Who proposed the “raisin bun” model of the atom?
Thomson
Who observed streams of negatively charged particles in gas discharge tubes?
Thomson
Who proposed that electrons exist in energy levels?
Bohr
which subatomic particle exists in energy levels?
Electrons
