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Atomic Model Test

Authored by Pamela Urnick

Science

7th Grade

Used 24+ times

Atomic Model Test
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40 questions

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1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Electrons are not present in the nucleus of a silicon atom.

There are 14 protons in the nucleus of a silicon atom.

Silicon atoms have no electrons.

A silicon atom should have 16 protons.

There are equal numbers of protons and neutrons in a silicon atoms with a mass number of 28.

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

A student has been learning about atoms. He wrote a small paragraph describing one.

How and Atom Looks

An atom looks similar to a racetrack. There are small particles that move like cars on a racetrack. These particles move in a circle around the edge of the track and do not easily move away from the center.


The student describes particles on the edge of the atom. Which statement supports the student's claim that the particles on the edge of the atom do not move away from the center?

The particles are connected to the center by an object similar to a rope.

The particles are attracted to the center because they have a charge opposite to the center's charge.

The particles are held in place because atoms are a solid structure.

The particles are pushed toward the center by nuclear charges of other atoms.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements best describes an atom?

a positively charged electron cloud surrounding a positively charged nucleus.

a positively charged electron cloud surrounding a negatively charged nucleus

a negatively charged electron cloud surrounding a positively charged nucleus

a negatively charged electron cloud surrounding a negatively charge nucleus

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the atomic mass of Carbon (C)?

39.95

12.01

6

17

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An atom's mass number equals the number of

protons plus the number of electrons

protons plus the number of neutrons

protons

neutrons

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following is an accurate illustration of a nitrogen atom?

A

B

C

None of the above

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Select the 2 subatomic particles below that are located inside the nucleus of an atom

electrons

protons

cloud

orbitals

neutrons

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