LC Chem Ch 2 The Atom (History)

Dalton's atomic theory states:

• that all matter was composed of atoms, indivisible and destructible building blocks

• that all matter was composed of atoms, indivisible and indestructible building blocks

• that all matter is composed of particles, divisible and indestructible building blocks

• that all matter was composed of particles, divisible and destructible building blocks

Tags

NGSS.HS-PS1-7

Who discovered cathode rays and found evidence that these cathode rays were actually particles?

• Dalton

• Crookes

• Thompson

• Stoney

• Millikan

Whose model of the atom was this?

Who is this guy? He discovered that electrons had negative charge, he figured out the charge to mass ration for electrons too. He also came up with a desert based model of the atom.....

• Thompson

• Crookes

• Rutherford

• Millikan

• Dalton

Who came up with the name "electron" for the fundamental unit quantity of electricity? (Later applied to the sub-atomic particle)

• Stoney

• Rutherford

• Crookes

• Thompson

What is the name of the stream of negative particles that travel from the cathode to the anode shown in this picture?

What did the oil drop experiment show?

• The charge to mass ratio on the electron

• The charge on the electron

• The mass of the electron

• The physical size of the electron

Who performed the oil drop experiment?

• Crookes

• Thompson

• Stoney

• Millikan

• Rutherford

Tags

NGSS.HS-PS2-5

Select the statement(s) below that are true about Rutherford.

• He did the gold foil experiment

• He did the oil drop experiment

• He discovered the proton

• He discovered the neutron

• He discovered the nucleus

Ernest Rutherford bombarded gold foil with _______ ________ and the way they scattered and bounced back indicated a hard dense core in the centre of atoms. He called this the nucleus

Tags

NGSS.HS-PS1-8