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Changes to the Atomic Model

Authored by Science Staff

Physics

8th - 10th Grade

Used 16+ times

Changes to the Atomic Model
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5 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is the best description of the Plum Pudding Model?

A sphere of positive charge with tiny negative charges inside.

A positive nucleus with electrons orbiting it.

A lump of negative charge containing smaller positive charges.

Protons and neutrons in a nucleus with electrons orbiting on shells.

2.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Ernest Rutherford fired __________ particles at thin gold foil.

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

As some alpha particles were deflected, it proved that...

the nucleus was negatively charged

there were electrons orbiting the nucleus

the nucleus was relatively large and positively charged

atoms were very small

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these was proof that atoms are mostly empty space?

Some alpha particles passed straight through the foil.

Some alpha particles were deflected by a small angle.

Very few alpha were deflected back towards the source.

5.

OPEN ENDED QUESTION

5 mins • Ungraded

Describe the modern (Bohr) Model of the atom.

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