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Timeline of the Atomic Model

Authored by Page Aurelio

Science

8th Grade

NGSS covered

Used 4+ times

Timeline of the Atomic Model
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces. What model is this?

Democritus's model of the atom
The "Plum Pudding Model" of the atom
The "Rutherford Model" of the atom
The "Quantum Mechanical Model" of the atom

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The Gold foil experiment was conducted by Ernest Rutherford. In the experiment, he discovered that atoms were mostly _________________. 

negatively charged
positively charged
electrons
empty space. 

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who is the British physicist who discovered the electron using cathode ray tube?

Joseph John Thomson

John Dalton
Ernest Rutherford
Robert Millikan

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What contribution did John Dalton make to atomic theory? 

He discovered that every atom was positively charged. 
He discovered that every element consisted of one type of atom.  
He discovered that atoms had nuclei. 
He discovered that atoms could be divided into smaller parts. 

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who did not propose a complete atomic model but, through his famous oil drop experiment in 1913 but he accurately measured the mass and charge of an electron?

Joseph Thomson
Robert Millikan
John Dalton
Niels Bohr

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Using the figure, what did Rutherford concluded about the atom?

has a nucleus with a positive charge
has a nucleus with a negative charge 
is a small mass with negative and positive charges
contains a nucleus without a charge

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

He determined the mass of an electron and confirmed it’s charge in 1909 as a result of oil drop experiments.

Thompson
Chadwick
Millikan
Democritus

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