Y2 Unit 5 Written Work#1

Y2 Unit 5 Written Work#1

7th Grade

11 Qs

quiz-placeholder

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Y2 Unit 5 Written Work#1

Y2 Unit 5 Written Work#1

Assessment

Quiz

Science

7th Grade

Practice Problem

Hard

Created by

Norman Rios

Used 4+ times

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which atomic model was the first one to include electrons?

Dalton's Snooker Ball model

Thomson's Plum Pudding model

Rutherford's Electron Cloud model

Bohr's Electron Shell model

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which atomic model was the first one to include the nucleus?

Dalton's Snooker Ball Model

Thomson's Plum Pudding model

Rutherford's Electron Cloud model

Bohr's Electron Shell Model

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

He confirmed the existence of uncharged particles in the nucleus called neutrons.

JJ Thompson

Ernest Rutherford

John Dalton

James Chadwick

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Why is the area around the nucleus in the modern atomic model called the electron cloud?

because it contains a dense cloud of many electrons

because the electrons are constantly moving in unpredictable ways around the nucleus

because scientists do not know how many electrons an atom has

because electrons are large and spread out

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

During a science experiment, Kharis and Khesed are comparing two forms of sodium. How do these two forms of sodium differ?

in the number of nuclei

in the number of electrons

in the number of protons

in the number of neutrons

6.

OPEN ENDED QUESTION

3 mins • 1 pt

Media Image

Noah is studying the properties of elements in his chemistry class. He learns that a Gold atom has 79 protons, 118 neutrons, and 79 electrons. What is the mass of this atom? Show solution.

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7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

Jimmy is conducting an experiment on building an atom with the following components:

Protons: 7
Neutrons: 6
Electrons: 6

What element did he form?

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