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Lesson: Percent Composition

Lesson: Percent Composition

Assessment

Presentation

Science

9th - 12th Grade

Medium

NGSS
MS-ESS1-1, MS-ESS2-1, MS-PS1-1

+7

Standards-aligned

Created by

Lan Vu

Used 1+ times

FREE Resource

7 Slides • 5 Questions

1

Percent Composition

2

Goal

By the end of this lesson. you will be able to calculate the persent composition fo each element in a compound.

3

​Percent Composition

4

5

​Summary:

​Write a summary of how to caclulate the percent composition of an element in a compound.

6

Multiple Choice

What is thpercent composition of each element in Sodium Hydroxide, NaOH?

1
Sodium: 50.00%, Oxygen: 30.00%, Hydrogen: 20.00%
2
Sodium: 60.00%, Oxygen: 35.00%, Hydrogen: 5.00%
3
Sodium: 45.00%, Oxygen: 45.00%, Hydrogen: 10.00%
4
Sodium: 57.48%, Oxygen: 40.00%, Hydrogen: 2.52%.

7

8

Multiple Choice

What is the percent composition of each element in C6H12O6?

1
C: 40.00%, H: 6.71%, O: 53.29%
2
C: 30.00%, H: 10.00%, O: 60.00%
3
C: 50.00%, H: 5.00%, O: 45.00%
4
C: 25.00%, H: 15.00%, O: 60.00%

9

10

Multiple Choice

What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of magnesium?

1

13%

2

43%

3

63%

4

87%

11

Multiple Choice

What is the percent composition of the elements in Benzene, C6H6?

1

C = 50%

H = 50%

2

C = 85.7 %

H = 14.3%

3

C = 92.2%

H = 7.8%

4

C = 71.9%

H = 28.1%

12

Multiple Choice

Find the percentage composition of Mg in Mg3(PO4)2.


1

27.48% Mg

2

43.11% Mg

3

16.00% Mg

4

12.63% Mg

Percent Composition

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