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Y8 Timeline of Atomic Model Development

Y8 Timeline of Atomic Model Development

Assessment

Interactive Video

Science

8th Grade

Medium

Created by

YCIS CQ

Used 1+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Democritus propose about everything in the world?

It was made of four elements: earth, wind, water, and fire.

It was made up of tiny, indivisible particles surrounded by empty space.

It was made of uniformly packed spheres of positive matter.

It was made of a dense, positively charged nucleus with electrons orbiting it.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Aristotle believe matter was made of?

Tiny, indivisible particles.

Four elements: earth, wind, water, and fire.

Electrons and a nucleus.

Positive and negative charges.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did John Dalton conclude about common substances?

They always broke down into different elements in varying proportions.

They were made of four fundamental elements.

They always broke down into the same elements in the same proportions.

They contained a central nucleus.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What significant particle did J.J. Thomson discover in 1897?

The proton

The neutron

The electron

The nucleus

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How did J.J. Thomson describe atoms in his "chocolate chip cookie" model?

As mostly empty space with a dense nucleus.

As electrons orbiting a nucleus at fixed energy levels.

As uniformly packed spheres of positive matter filled with negatively charged electrons.

As particles that behave like waves.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Rutherford's gold foil experiment reveal about atoms?

Atoms are solid, indivisible spheres.

Atoms consist largely of empty space with a concentrated nucleus.

Electrons orbit the nucleus in fixed paths.

Electrons are uniformly dispersed throughout a positive sphere.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was a key feature of Niels Bohr's planetary model of the atom?

Electrons are randomly scattered within a positive sphere.

Electrons orbit the nucleus at fixed energy levels and distances.

Electrons cannot be precisely located.

Atoms are indivisible.

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