Chemistry 2.3 Review

Chemistry 2.3 Review

12th Grade

6 Qs

quiz-placeholder

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Chemistry 2.3 Review

Chemistry 2.3 Review

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

Easy

Created by

Spencer Austin

Used 5+ times

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6 questions

Show all answers

1.

DROPDOWN QUESTION

1 min • 2 pts

​ (a)   is how close your measurement is to the "accepted" value, while ​ (b)   is how close your measurements are to each other.

Accuracy
Precision
Correctness
Error

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How precisely a tool is able to make a measurement is based on its what?

Error

Percent Error

Significant Figures

Answer explanation

While error and percent error are indeed ways to see how precise a measurement is, the number of significant figures a tool is able to give you tells you how precise the tool itself is. Error and percent error could be based on operator error.

3.

MATCH QUESTION

1 min • 2 pts

Match the following numbers to their significant figures AND the reasoning for how many they have.

220 grams

3 sig figs, because non-zero numbers are always significant

10 apples

3 sig figs, because zeroes after a decimal AND a significant number are significant

404 grams

Infinite, because it's a counting number

257 grams

2 sig figs, the 0 is trailing and is not significant

34.0 grams

3 sig figs, the zero between non-zero numbers is always significant

4.

MATH RESPONSE QUESTION

2 mins • 1 pt

Round the number 25,470 to the hundreds place.

Mathematical Equivalence

ON

5.

MATH RESPONSE QUESTION

2 mins • 1 pt

Round the number 125.25 to the tenths place

Mathematical Equivalence

ON

6.

DROPDOWN QUESTION

1 min • 2 pts

When adding and subtracting numbers, you should round your answer to ​ (a)   .

When multiplying and dividing numbers, you should round your answer to ​ (b)   .

the smallest shared decimal place
the least number of sig figs involved
two decimal places

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