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EXAM 1 CHEMISTRY

Total questions: 15

Worksheet time: 54mins

Name
Class
Date
1.

Describe the differences between natural and synthetic materials

4 lines
2.

Coal is a

a)

natural material

b)

synthetic material

3.

Gasoline is a

a)

natural material

b)

synthetic material

4.

Kevlar is a

a)

natural material

b)

synthetic material

5.

Quantitative properties explain

a)

the properties that can be observed by our senses

b)

the properties that can be measured and take a numerical value

c)

the properties that depend on the extension or quantity of matter

d)

the properties that depend on what the material is made of

6.

Qualitative properties explain

a)

the properties that can be observed by our senses

b)

the properties that can be measured and take a numerical value

c)

the properties that depend on the extension or quantity of matter

d)

the properties that depend on what the material is made of

7.

Extensive properties explain

a)

the properties that can be observed by our senses

b)

the properties that can be measured and take a numerical value

c)

the properties that depend on the extension or quantity of matter

d)

the properties that depend on what the material is made of

8.

Intensive properties explain

a)

the properties that can be observed by our senses

b)

the properties that can be measured and take a numerical value

c)

the properties that depend on the extension or quantity of matter

d)

the properties that depend on what the material is made of

9.

Select the properties that are extensive properties

a)

Mass

b)

Density

c)

Solubility

d)

Volume

e)

Boiling point and melting point

10.

Select the properties that are intensive properties

a)

Mass

b)

Density

c)

Solubility

d)

Volume

e)

Boiling point and melting point

11.

What is a solution?

4 lines
12.

What does the mass percent concentration calculates?

a)

The percentage in volume of a solute in a given solution

b)

The percentage in mass per volume of a solute in a given solution

c)

The percentage in particles of a solute in a given solution

d)

The percentage in mass of a solute in a given solution

13.

What does the volume percent concentration calculates?

a)

The percentage in volume of a solute in a given solution

b)

The percentage in mass per volume of a solute in a given solution

c)

The percentage in particles of a solute in a given solution

d)

The percentage in mass of a solute in a given solution

14.

There is a solution prepared with 35.25 grams of NaCl and 500 ml of water. What is the mass percentage concentration? The density of water is equal to 1 g/ml. DO NOT FORGET TO INCLUDE THE UNITS OF YOUR RESULT

4 lines
15.

There is a solution prepared with 10.15 grams of NaCl and 1250 ml of water. What is the volume percentage concentration? The density of NaCl is equal to 1.08 g/ml. DO NOT FORGET TO INCLUDE THE UNITS OF YOUR RESULT

4 lines