U2: Lewis Structures: Mastery Test

U2: Lewis Structures: Mastery Test

9th Grade

10 Qs

quiz-placeholder

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U2: Lewis Structures: Mastery Test

U2: Lewis Structures: Mastery Test

Assessment

Quiz

Science

9th Grade

Hard

NGSS
HS-PS1-1, MS-PS1-1, HS-PS1-2

Standards-aligned

Created by

Christopher Powers

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a molecule of methane, carbon (having four valence electrons) binds to four hydrogen atoms. How many lone pairs of electrons will be represented in the Lewis structure of methane?

four

two

one

zero

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in creating a Lewis structure for a molecule?

counting the number of lone pairs of electrons

counting the number of electron orbitals

counting the number of single bonds

counting the number of valence electrons

Tags

NGSS.HS-PS1-1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Select the correct answer. How many lone pairs of electrons are represented in the Lewis structure of a nitrate ion (NO₃⁻)?

4

8

12

24

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Select the correct answer. What is the total number of electrons shown in this Lewis structure of carbon dioxide?

8

12

16

24

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the correct Lewis structure for fluorine, which is a group 7A element?

A

B

C

D

Tags

NGSS.HS-PS1-1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the correct Lewis structure for carbon tetrabromide (CBr₄), in which a central carbon atom is bound to four atoms of the group 7A element bromine?

A

B

C

D

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the correct Lewis structure for carbon monoxide?

A

B

C

D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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