Atomic Theory

Atomic Theory

9th Grade

20 Qs

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Atomic Theory

Atomic Theory

Assessment

Quiz

Chemistry

9th Grade

Practice Problem

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The cloud model is what we use for the atomic theory now. What does the cloud model look like?

A ring with gold foil in the middle.

Electrons orbiting the nucleus like the planets around the sun.

A cloud of electrons floating around the nucleus.

A scoop of chocolate chip ice cream. It had electrons scattered within a ball of positive charge.

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

What two particles would you find in the nucleus of an atom?

Protons and electrons

Neutrons and electrons

Protons and neutrons

Electrons and negatrons

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The scientist responsible for "discovering" the nucleus is:

Bohr
Rutherford
Schroedinger
Einstein

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

What did Bohr's atomic theory model look like?

A ring with gold foil in the middle.

Electrons orbiting the nucleus like the planets around the sun.

A cloud of electrons floating around the nucleus.

A scoop of chocolate chip ice cream. It had electrons scattered within a ball of positive charge.

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Who first came up with the idea of an atom and called them "atomos"?

o Democritus

o Thomson

o Rutherford

o Bohr

6.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

He developed the planetary model of the atom.

Rutherford
Bohr
Chadwick
Dalton

7.

MULTIPLE CHOICE QUESTION

15 mins • 5 pts

Rutherford and his students did experiments that showed

Atoms contain negative particles, now called electrons.

Atoms are mostly empty space.

Neutrons are located in the nucleus.

Matter cannot be lost or gained.

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