Exam 2 Review

Discovered the electron within the atom

• Thomson
• Chadwick 
• Schrodinger & Heisenberg
• Dalton

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Thomson

• Ernest Rutherford

• John Dalton

• Democritus

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

True or False: The majority of an atom is made up of empty space

• True
• False

What type of particles exist within an atomic nucleus?

• Protons and Neutrons
• Neutrons and electrons
• Neutrons and Atoms
• Elements and Atoms

Tags

NGSS.HS-PS1-8

What can be found outside the nucleus? MULTI-SELECT!

• electrons

• negative charge

• orbitals

• positive charge

• protons

Which scientist proposed a model of the atom in which the electrons are orbiting at different energy levels?

• Niels Bohr

• James Chadwick

• John Dalton

• Ernest Rutherford

Tags

NGSS.HS-PS1-1

Whose model of the atom is pictured here?

• Bohr
• Thomson
• Rutherford
• Schrodinger

Whose model of the atom is pictured here?

• Bohr
• Rutherford
• Thomson
• Schrodinger

What is an ion?

• A neutral atom
• An atom with a different number of electrons
• An atom with a different number of neutrons
• An atom with a different number of protons