Math in Chemistry Review

Question 1

Convert 6.72 x 10-2 back to the original number

Accepted Answer

0.0672

Question 2

What is precision?

Accepted Answer

How close a series of measurements are to one another

Question 3

How many sig figs in 875.034?

Accepted Answer

6

Question 4

Where do you make a reading on a graduated cylinder?

Accepted Answer

Bottom of meniscus

Question 5

If a line is 1 m long, how long is the line in mm?

Accepted Answer

1000 mm

Question 6

How many sig figs in 0.030450?

Accepted Answer

5

Question 7

What is the density formula?

Accepted Answer

D = M / V

Question 8

How many sig figs in 10.000?

Accepted Answer

5

Question 9

How many sig figs in 8.200 x 103?

Accepted Answer

4

Question 10

Convert 38.47 m to dm

Accepted Answer

384.7 dm

Question 11

How many sig figs are in 209.0100

Accepted Answer

7

Question 12

Which diagram shows accuracy and precision?

Accepted Answer

D

Question 13

Write 8000.0 in scientific notation

Accepted Answer

8.0000 x 103

Question 14

0.02305 cm = ____ km

Accepted Answer

0.0000002305 km

Question 15

Round 77.603 to 4 sig figs

Accepted Answer

77.60

Question 16

The more decimal places a number has the more ___________ that number is.

Accepted Answer

Precise

Question 17

Convert 8.456789 x 108 into the original number

Accepted Answer

845,678,900

Question 18

If your calculator shows 12.846239, how would you round to 4 sig figs?

Accepted Answer

12.85

Question 19

The following target shows....

Accepted Answer

Precision but not accuracy

Question 20

A gold nugget has a mass of 25 g and a volume of 5 ml. What is the density?

Accepted Answer

5 g/mL

Questions 20