Atom History

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

• Atoms

• Parts

• Molecules

• Hydrogen

Tags

NGSS.MS-PS1-5

In the Thomson Model, he discovered the existence of what particle?

• Electrons

• Protons

• Neutrons

• Quarks

Which model is this?

• Thomson Model

• Cloud Model

• Bohr Model

• Rutherford Model

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Proposed that electrons move around the nucleus in specific layers, or shells.

• Bohr

• Rutherford

• Chadwick

• Thomson

Tags

NGSS.MS-PS1-1

Who performed the Gold Foil Experiment?

• J. J. Thomson

• Ernest Rutherford

• Neils Bohr

• John Dalton

What happened to Democritus’ ideas?

• They are what we use today.

• They were discarded in the 1800s.

• They were mostly forgotten.

• They are the basis of Ancient Greek science.

Who was John Dalton?

• An Ancient Greek philosopher who believed in four elements: earth, air, fire, and water.

• A scientist in the 1800s who came up with the first atomic theory by studying gases.

• A scientist who came up with the plum pudding model by doing an experiment with a cathode ray.

• A scientist who performed the Gold Foil Experiment.

Dalton’s Atomic theory states: All elements are made of________

• particles

• atoms

• electrons

• molecules

Tags

NGSS.MS-PS1-5

Dalton’s Atomic Theory states: Atoms of the same_______are alike, and atoms of different________are different.

• particle(s)

• molecule(s)

• electron(s)

• element(s)

Who was J. J. Thomson?

• An Ancient Greek philosopher who believed everything was made of tiny particles called atoms.

• A Russian scientist who organized the elements by mass.

• A scientist who discovered electrons using a cathode ray tube.

• A scientist who came up with the first atomic theory.