Name: _______________________________________ Date: _________________
Mr. Sullivan
7th Grade Science
Properties of Elements and Compounds
Objective: Utilize websites to identify the properties of several elements and the
properties of some common compounds which those elements combine to make. Each
table and the question at the end of the lab is worth 2 points (Except the extra credit.)
Ammonia
Properties of the element nitrogen (N): http://www.chemicool.com/elements/nitrogen.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Odor and taste
Harmful effects of nitrogen
Properties of the element hydrogen (H): http://www.chemicool.com/elements/hydrogen.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Odor
Harmful effects of hydrogen
Properties of the compound ammonia (NH3):
http://www.health.ny.gov/environmental/emergency/chemical_terrorism/ammonia_general.htm
Scroll down to “What are the properties of ammonia?” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Odor
Harmful effects of ammonia
Fool’s Gold
Properties of the element iron (Fe): http://www.chemicool.com/elements/iron.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Harmful effects of iron
Properties of the element sulfur (S): http://www.chemicool.com/elements/sulfur.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Odor
Harmful effects of sulfur
Properties of the compound pyrite of fool’s gold (FeS2):
http://geology.com/minerals/pyrite.shtml
Use the information on this webpage (including the pictures) to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Why is pyrite called fool’s gold?
Table Salt
Properties of the element sodium (Na): http://www.chemicool.com/elements/sodium.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Harmful effects of sodium
What happens to sodium in air?
How does sodium react with water?
Properties of the element chlorine (Cl): http://www.chemicool.com/elements/chlorine.html
Use the “Data Zone” at the top left of the page and then scroll down to “Appearance and
Characteristics” to answer the following.
State at room temperature (Solid, liquid or gas)
Color
Odor
Harmful effects of chlorine
Properties of the compound table salt (NaCl):
http://www.britannica.com/EBchecked/topic/519712/salt-NaCl
You will also have to reflect on your own knowledge of table salt to answer some of the following.
State at room temperature (Solid, liquid or gas)
Color
What are some uses for table salt?
http://www.eatingwell.com/nutrition_health/nutrient_library/sodium_chloride
Based on what you’ve learned in this webquest lab, how do the properties of elements
compare with the properties of the compounds they make? In other words, how do the
properties of nitrogen and hydrogen compare to the properties of ammonia? How do the
properties of sodium and chlorine compare to the properties of table salt? Etc.
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Extra Credit: Bleach [5 extra points possible]
Properties of the compound bleach (NaClO):
http://www.powellfab.com/technical_information/sodium_hypochlorite/what_is.aspx
State at room temperature (Solid, liquid or gas)
Color
Uses of bleach
Harmful effects of bleach
Which element chemically combines with table salt to make bleach?
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Would you consider the properties of bleach and table salt to be alike or different?
Why?
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