Name: _________________________________________
WORKSHEET 4 A
Chapter 4 Worksheet Packet
Section 1 Reading Guide (90-93)
1. What is an element?
2. True or false: An element is an example of a pure substance. __________
3. What is a pure substance?
4. Atoms, which are pure substances, are much to __________ for us to see.
5. Each element has its own set of unique properties known as characteristic properties.
List the different characteristic properties mentioned
a. Physical characteristic properties
b. Chemical characteristic properties
i.
i.
ii.
Ii.
iii.
iv.
6. What are the three main categories of elements?
a.
b.
c.
7. Looking at Figure 4 on page 93, list some properties of
a. Metals
b. Nonmetals
c. Metalloids
8. By knowing the category to which an unfamiliar element belongs, you can ________
some of its properties.
9. Let’s say you needed to make a shatter-proof container. Would you make it out of a
metal, metalloid, or nonmetal? _________________________ Explain why in the space
below.
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2012-2013
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Section 2 Reading Guide (pages 94-97)
1. What is a compound?
WORKSHEET 4 B
2. True or false: compounds result from physical combinations of elements. _________
3. Elements join in a ____________ ratio according to their masses to form a compound.
4. What happens if a sample of a compound has a mass ratio of hydrogen to oxygen
that is not 1:8? It __________ be water.
5. What are three physical properties used to identify compounds?
a.
b.
c.
6. Look at Figure 2 on page 95.
a. Describe sodium
b. Describe chlorine
c. Would you consider either of those two elements to be safe? ____________
d. Describe sodium chloride
e. Would you consider sodium chloride to be safe? ______________
7. A compound has properties that _________ from those of the elements that form it.
8. If a compound breaks down, what two things could it break down into?
9. Compounds can only be broken down by (circle one) physical / chemical changes.
10. What compound must be broken down to get aluminum? ____________________
11. What use does aluminum have in industry?
12. What elements must be combined to make ammonia? ____________ and _____________
13. Why is ammonia used in industry?
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2012-2013
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WORKSHEET 4 C
Pure Substances Worksheet
Label the following as an element, compound, or neither
Place a “P” in the blank if the protery of a pure substance is physical, and place a
“C” if it is a chemical property of a p0ure substance
Circle the items that you think are examples of pures substances
Aluminum
Raisin bread
Carbon dioxide
Water
Sugar and water
Sulfur
Sulfuric acid
Mercury
An orange
Water and instant coffee
A pencil
Carbon particles and sugar
Nitrogen
Air
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Gasoline
Rubbing alcohol
WORKSHEET 4 D
Section 3 Reading Guide (pages 98-105)
1. What is a mixture?
2. A mixture results from what type of change?
a. Physical
b. Chemical
3. All mixtures ares separated through physical means. Figure 3 on page 99 lists three
different ways to separate mixtures.
a.
b.
c.
4. True or false: The components of a mixture need to mixed in a specific ratio. __________
5. Add the information in to complete Table 1 on page 100.
Mixtures
Made of elements, compounds,
or both
___________ in original properties
of components
Separated by _________ means
Formed using ________ ratio of
compoenents
Compounds
Made of elements
_______ in original properties of
compoenents
Separated by _________ means
Formed using a ______ ratio of
components
6. What is a solution?
7. Solution have the same ____________________ and ________________ throughout the
mixture.
8. In solutions, the _______ is the substance that is dissolved, and the __________ is the
substance that does the dissolving.
9. In the space to the right, I have a glass of powdered lemonade
solution. Use dots to show how the lemonade powder would be
dispersed in the solvent (water).
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WORKSHEET 4 D
10. Looking at Table 2 on page 101, give an example of a gas dissolving in a gas
_________________ and a solid dissolved in a solid _____________________.
11. The particles in solutions are so ________ that they never settle out.
12. Can solutes and solvents be separated by filtering in a solution? _____________
13. Do solutions scatter light? ______
14. What is concentration?
15. If I added one drop of food dye to a glass of water, that would be a (circle one) dilute
/ concentrated solution. If I added one hundred drops of food dye to a glass of water,
that would be a (circle one) dilute / concentrated solution.
16. What is solubility?
17. How does the solubility of gases change with temperature?
18. Look at Figure 7 on page 103 and list the three different ways to get solids to dissolve
faster in liquids
a.
b.
c.
19. What is a suspension?
20. A suspension has (circle one) small / medium / large particles.
21. True or false: A suspension can scatter light. ____________
22. A suspension can b separated by passing it through a ____________.
23. What is a colloid?
24. Which of the following is not true about a colloid?
a. They have properties between solutions and suspensions
b. They can scatter light
c. They can be separated by filtration
d. They have medium-sized particles
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2012-2013
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Elements, Compounds, and Mixtures
WORKSHEET 4 E
(Modified from staff.fcps.net)
Elements, Compounds, and Mixtures
Classify each of the pictures below by placing the correct label in the blanks below:
A= Element
D= Mixture of compounds
B= Compound
E= Mixture of elements and compounds
C= Mixture of elements
Each circle represents an atom and each different color represents a different kind of
atom. If two atoms are touching then they are bonded together.
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2012-2013
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WORKSHEET 4 F
Elements, Compounds, Mixtures Flowchart
Use the words at the bottom of the page to complete the flow chart
The substances do not
need to be in a ________
ratio
MATTER Is broken into 2
major groups
_____________ are
classified based on the
size of the particles
_____________
_____________
____________ are
only made of one
substance
______________ are
made of 2+ substances
chemically combined
__________ are
the tiny building
blocks
_________________ is an
example
The elements always
combine in the ________
ratio
In this, the
__________
dissolves into the
______________
A __________ is a
mixture where the
particles settle out
over time.
A ___________ is
a mixture in which
the particles are
dispersed but do
not settle out
A __________ is a
mixture that
appears to be a
single substance
For this mixture,
the particles are
the
____________.
They scatter light
and they can be
filtered.
For this mixture,
the particles are
______ sized. They
do scatter light,
but they can't be
filtered
For this mixture,
the particles are
the ____________
and do not scatter
light; they can't be
filtered
______________ is
an example
______________ is
an example
_____________ is
an example
ATOMS CARBON DIOXIDE COLLOID COMPOUNDS DEFINITE ELEMENTS LARGEST MEDIUM MILK MIXTURES PURE
SUBSTNACES SALT WATER SAME SMALLEST SNOW GLOBE SOLUTE SOLUTION SOLVENT SUSPENSION
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