Chapter 3 Review

Number of SigFigs

100

The number of significant digits in 2.252

What is 4

200

The number of significant figures in 20003

What is 5

300

The number of significant figures in 20800

What is 3

400

The number of significant figures in 0.0040

What is 2

500

The number of significant figures in 200.

What is 3

Rounding

100

Round 329 to 2 significant figures

What is 330

200

Round 16450 to 3 significant figures

What is 16500

300

Round 0.0021040 to 3 significant figures

What is 0.00210

400

Round 39060 to 3 significant digits

What is 39100

500

Round 29.940 to 2 significant digits

What is 30.

Multiplication/Division in SigFigs

100

25 / 10

3

200

20.2 x 31

What is 630

300

37.32 x 68 in significant digits

What is 2500

400

6.02x10²³ / 4.100x10⁴

What is 1.47x10¹⁹

500

7.0 x 2.8 in significant digits

What is 20.

Addition/Subtraction in SigFigs

100

4.37 + 12.1 

What is 16.5

200

6.14

- 2.1

____

What is 4.0

300

6.99 + 15.01

What is 22.00

400

12.5 - 0.0497

What is 12.5

500

       23.4 

+ 4317

+  260

_______

What is 4.60 x 10³

Potpourri

100

These types of observations include numbers

What is quantitative

200

The temperature where molecules stop moving and have zero kinetic energy

What is absolute zero

300

25^o Celsius converted to Kelvin

What is 298 K

400

This refers to how close a measurement is to the true value

What is accuracy

500

The number of kilometers in 650 centimeters

What is 0.00065 kilometers