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Intro to Chem - Math and Measurement

Authored by ERIN WILLIAMS

Chemistry

11th Grade

NGSS covered

 Intro to Chem - Math and Measurement
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43 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

During a laboratory experiment, a sample of aluminum is found to have a mass of 12.50 grams and a volume of 4.6 milliliters. What is the density of this sample, expressed to the correct number of significant figures?

2.717 g/mL

2.72 g/mL

3 g/mL

2.7 g/mL

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. Which two masses produce this answer?

210.10 g + 235.100 g

210.100 g + 235.10 g

210.10 g + 235.10 g

210.1 g + 235.1 g

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The measurement 0.41006 grams, rounded to three significant figures, is expressed as

0.41

0.410

0.4100

0.4101

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which measurement contains three significant figures?

0.05 g

0.056 g

0.050 g

0.0563 g

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A student determined in the laboratory that the percent by mass of water in CuSO•5H₂O is 40.0%. If the accepted value is 36%, what is the percent of error?

0.11 %

1.1 %

11 %

4.0 %

Tags

NGSS.MS-PS1-2

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In scientific notation 0.004051 is equal to:

4.051 × 10³

4.051 × 10⁻³

40.51 × 10⁻⁴

0.4051 × 10⁴

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Write 4.82 x 10³ in standard form.

0.00482

0.0482

482.0

4820.0

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