Chem 1030 SI

Sig Figs

100

How many sig figs are in 2040?

3

200

How many sig figs are in 0.00023040?

5

300

How many sig figs are in 102.400 meters?

6

400

3340 x 1.2 = ?

4.0 x 10³

500

A piece of stone has a mass of 24.595 grams and a volume of 5.34 cm3. What is the density of the stone?

4.61 g/cm³

Sig Fig Math

100

7.987 m - 0.54 m = ?

7.45 m

200

3.12 g + 0.8 g + 1.033 g = ?

5.0 g

300

145 - 0.99 = ?

144

400

8.888 x 3.29853 = ?

29.32

500

923 g / 20 312 cm³ = ?

0.0454 g/cm³

Name That Element

100

H

Hydrogen

200

Al

Aluminum

300

K

Potassium

400

Sn

Tin

500

Pd

Palladium

Words

100

Define cation

Positively charged ions (more protons than electrons)

200

Define heteroatomic molecules

Contains two or more kinds of molecules

300

Name a property of Metals

Good conductors of electricity and heat

400

Define empirical formula and give an example

A chemical formula with the subscripts that represent the simplest whole-number ratio of the atoms in a compound

i.e. H₂O, NaOH, etc

500

Define Intensive property

A physical quantity whose value does not depend on the amount of the substance for which it is measured

i.e. color, temp, density, and concentration

Moreeeee Sig Figs!

100

Round the following to 3 sig figs:

939.25

939

200

Round the following to 3 sig figs:

11.1111

11.1

300

Round the following to 3 sig figs:

0.008499

0.00850

400

Write in Scientific Notation:

27.0040

2.70040 x 10¹

500

Write in Scientific Notation:

0.00000003500

3.500 x 10^-8