Elements and Compounds
Matter and Energy
Elements and Compounds
Part I: Matter
1.  Chemical symbols are written with the first letter a capital letter and any other letters as lower
case letters. Write the name and chemical symbols for four different elements (you choose the
elements.)
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2.  What is the symbol for Copper? _________
3.  What is the symbol for Krypton? _________
4.  What element has the symbol He? ___________________________
5.  What element has the symbol Ca? __________________________
Elements Found in Significant Amounts
Element Name
Chemical Symbol
Lithosphere
Atmosphere
Biosphere
Hydrosphere
Aluminum
Argon
Calcium
Carbon
Chlorine
Fluorine
Hydrogen
Iodine
Iron
Magnesium
Nitrogen
Oxygen
Phosphorus
Potassium
Silicon
Sodium
Sulfur
Zinc
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Elements and Compounds
Matter and Energy
Part I: Matter, continued
6.  Define a pure substance.
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7.  Define an element.
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8.  How are elements identified on the Periodic Table?
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9.  Explain how one and two letter chemical symbols are used to identify elements whose names
begin with the same letter, for example hydrogen and helium.
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10. Which elements are found in all four components of Earth?
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Elements and Compounds
Matter and Energy
Part II: Elements, Compounds, and Mixtures
Elements, Compounds and Mixtures, Oh My!
Description
Mixtures
Definition
A mixture of different
substances. Contains
elements, compounds, or both
in various amounts.
How to
Separate
Can be separated into its parts
by physical methods such as
sorting, evaporation, filtering,
or magnetic attraction.
Properties
Properties depend upon the
elements and compounds
present and their amounts.
Representation
Examples
Elements
Compounds
Not represented on the
Periodic Table.
Salt water
Trail mix
1.  How are elements and compounds alike?
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2.  How are elements and compounds different?
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Elements and Compounds
Matter and Energy
Part III: Elements Make Compounds
Use colored pencils to draw your four models in the correct columns.
Elements
Compounds
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Elements and Compounds
Matter and Energy
Part IV: Analyzing Compounds
Analyzing Compounds
Compound
CO2
Element name and element
symbols present in the
compound
Model
(glue in place after teacher approval)
Carbon - C
Oxygen - O
H 2O
NO2
SO2
HCl
NaCl
1.  How is the Periodic Table useful?
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2. How is a compound different from a mixture?
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Elements and Compounds
Matter and Energy
Reflections and Conclusions
1.  Determine which substance listed below is an element and which is a compound. Write an “E”
for element and a “C” for compound.
Substance
E or C
Substance
H
CaCO3
CO2
O
Co
N
Ca
SiO2
E or C
2.  What is a compound?
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3.  Explain why a compound is a pure substance although it is made from more than one element.
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4.  What can be said about the percentage of elements found in significant amounts in Earth’s
biosphere, lithosphere, hydrosphere, and atmosphere compared to the total number of
elements listed on the Periodic Table?
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5.  What are the advantages of using the plastic snap-together toy, like
the one shown in the picture, as a model for elements and compounds?
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6.  What are the disadvantages of using the plastic snap-together toy, like the one shown
in the picture, as a model for elements and compounds?
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