honors chem Unit 1 review

Negatively charged particle

• proton

• neutron

• electron

Tags

NGSS.HS-PS2-5

Neutral charge particle

• proton

• neutron

• electron

Positively charge particle

• proton

• neutron

• electron

Tags

NGSS.MS-PS2-3

The central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.HS-PS1-8

Which device did JJ Thomson use to discover the electron?

• X-ray machine

• scanning tunneling electron microscope

• spectrometer

• cathode ray tube

The atomic model associated with Thomson is the

• plum pudding or chocolate chip cookie model

• nuclear model

• planetary model

• the electron cloud model

Which is a finding attributed to Rutherford's Gold Foil Experiment?

• atoms are indivisible and have a dense positive nucleus.

• atoms are divisible and have multiple layers of electrons scattered uniformly about the atom.

• atoms are like plum pudding with positive and negative charges uniformly scattered throughout the atom.

• atoms are mostly empty space with a dense positive nucleus.

Tags

NGSS.HS-PS1-8

What evidence did Rutherford use to support the idea that the atom was mostly empty space?

• the vast majority of the alpha particles went through the foil unaffected.

• the vast majority of the alpha particles were deflected at 90 degrees.

• one alpha particle was deflected by the gold foil.

• beams of alpha particles were deflected by magnets.

According to J.J. Thomson's atomic model, negatively charged particles are embedded in

• a uniformly positive "dough"

• a "dough" of neutral charges

• A nucleus

• A "dough" of small atoms

Which of these model was made by Thomson

• 
• 
• 
• None of these