Test 1 Review: Chemistry Basics

Matter

100

All matter comes in 2 forms

pure subtances and mixture of pure subtances 

200

Chemical or physical property?

ability to combust

chemical 

300

What type of matter has no definite shape or volume

gas

400

How can you separate a mixture by boiling point?

Distillation 

500

What type of matter cannot be broken down by chemical means?

elements

Chem Basics

100

Quantitative or qualitative?

The sample is a fine pink solid. 

Qualitative 

200

Convert to Scientific Notation:

638 000 000 000

6.38 x 10¹¹

300

How many Oxygens are in this compound

Mg(NO₃)₂

6

400

Chemical or physical change? 

Sublimation 

physical 

500

What is a subtance that is in its gaseous form but is solid or liquid at room temperature?

vapor

Sig Figs

100

How many sig figs?

500

1

200

How many sig figs? 500.0

4

300

How many sig figs?

50500

3

400

78.986+87.90

166.89

500

980*7

7000

Density

100

What is the density formula?

D=m/v

200

What is the formula for volume

v=m/D

300

What is the Density of an object if the mass 5.00 g and a volume of 4.68 mL? 

Use appropriate sig figs and units. 

1.07 g/mL

400

What is the mass of an object with density of 0.967 g/mL and a volume of 7.2 mL?

Use the appropriate sig figs and units. 

6.96 mL

500

What is the volume of an object with a mass of 8 g and density of 0.784 g/mL?

Use appropriate sig figs and units.

10 mL

Unit Conversions

100

What does milli represent? 

10^-3

200

Convert to 300 cm to m

3m

300

Convert 0.000078 L to μL

78μL

400

Convert 90 dL to L 

9.0 L

500

Convert 0.856 Km to m

856m