2/6/2019
Symbols, and Formulas and Chemical and Physical Prop. Webquest - Google Docs
ANSWER KEY
Chemical Symbols and Formulas
1. Why do we use symbols and formulas?
to illustrate chemical reactions and the elements and compounds involved in them.
2. Define chemical symbol.
is a one or two letter designation of the element
Capitalized
3. The first letter of a chemical symbol is always __________________,
and the second
case
letter is always lower
_____________ _________.
4. List four examples of chemical symbols and their names.
a.Na Sodium
b.K Potassium
c.Fe Iron
d.Cu Copper
5. Write four wrong examples of the chemicals you listed above.
a. nA
b. k
c. FE
d. CU
6. What is a compound?
a combination of two or more elements that are chemically combined
7. Define a chemical formula. an expression that shows the elements in a compound and the
relative proportions of those elements.
8. What is the chemical formula of water?
H20
a. Explain this formula. Break the formula up to chemical symbols.
2 hydrogen and one oxygen
9. Write an example of another chemical formula other than water.
H2SO4
10. Watch the video and write two facts that you got from watching it.
a.
b.
Quiz: Use the periodic table on google classroom to help you!
11. Name the elements in the chemical formula CaCl2. Calcium and 2 Chlorine
12. Name the elements in the chemical formula NiSO 4 Nickle, Sulfur, and 4 Oxygen
13. List the chemical symbols for radon, copper, and iron.
Radon = Rn
Copper =
Cu
Iron = Fe
https://docs.google.com/document/d/1fuVd3H6ewKj1_eVQBDhp3bD3uFQYtmh4hHD8J29P9Ps/edit
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2/6/2019
Symbols, and Formulas and Chemical and Physical Prop. Webquest - Google Docs
Physical Properties
1.
Define physical properties. Properties that can be measured or observed without changing
the chemical composition.
2. Physical properties are typically things you can detect with your senses
_____________.
a. For example, they may be things that you can
see, hear, smell, and feel
____________________________.
3. List a physical property for sand and snow. color, snow is softer than sand.
4. List 6 additional physical properties.
a. States of matter
b. Boiling Point
c. Ability to conduct heat
d. Odor
e. Ability to conduct electricity (conductors or insulators)
f. Ability to dissolve
5. Watch the video and list on physical property for a gas, liquid, and solid.
a. Gas: Smoky, etc.
b. Liquid: Flows, wet, etc.
c. Solid: hard, etc.
Chemical Properties
1.
Define chemical properties.Properties that can be measured or observed only when
matter undergoes a change to become entirely new.
2. List three examples of physical properties.
a. rust
b. reactivity
c. flammability
3.
Read the paragraph and watch the video and explain what reactivity is.
the ability to combine with other substances (react)
4. Define flammability.
the ability to burn
Quiz:
5. Is melting a physical property or chemical property?
Physical property (phase change)
6.
What metal has the ability to rust?
Iron
https://docs.google.com/document/d/1fuVd3H6ewKj1_eVQBDhp3bD3uFQYtmh4hHD8J29P9Ps/edit
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