Name_________________________________________
Period ______
What Am I Made Of? - Chemical Formulas
For each of the following: identify the elements present and the number of atoms of each
element in the molecule.
1.
2.
Aspirin - C9H8O4
Elements Present
Total # of Elements
Tylenol - C8H9NO2
# of Atoms
of each
Element
Elements Present
Total # of Atoms
3.
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
4.
Coke - C17H21NO4
Elements Present
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
Bleach - 3NaOCl
Elements Present
Total # of Elements
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TEKS 8.5 (D) Chemical Formulas
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# of Atoms
of each
Element
Total # of Atoms
5.
6.
Caffeine - C8H10N4O2
Elements Present
Total # of Elements
Hydrogen peroxide - 3H2O2
# of Atoms
of each
Element
Elements Present
Total # of Atoms
7.
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
8.
Glucose - C6H12O6
Elements Present
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
Ammonia - 2NH3
Elements Present
Total # of Elements
Page 26 of 34
TEKS 8.5 (D) Chemical Formulas
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# of Atoms
of each
Element
Total # of Atoms
9.
10.
Table salt – 4NaCl
Elements Present
Total # of Elements
Benzoyl peroxide - C14H10O4
# of Atoms
of each
Element
Elements Present
Total # of Atoms
11.
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
12.
Wintergreen flavor - C8H8O3
Elements Present
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
Lotion - CH4N2O
Elements Present
Total # of Elements
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TEKS 8.5 (D) Chemical Formulas
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# of Atoms
of each
Element
Total # of Atoms
13.
14.
Ethanol - C2H5OH
Elements Present
Total # of Elements
15.
# of Atoms
of each
Element
Elements Present
Total # of Elements
Elements Present
Total # of Atoms
Lycopene
(red pigment in a tomato)
C40H56
# of Atoms
of each
Element
Total # of Atoms
Theobromine
(main ingredient of chocolate)
C7H8N4O2
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
16.
Corn Syrup - C6H12O6 + H2O
Elements Present
Total # of Elements
# of Atoms
of each
Element
Total # of Atoms
1. What would happen to the quantities of atoms and elements in the compounds and
molecules if the number of molecules doubles? Triples?
Page 28 of 34
TEKS 8.5 (D) Chemical Formulas
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2. How can the increase in molecules be written to express the change?
Vocabulary:
An atom is the smallest unit of matter of an element, having all the characteristics of that
element and consisting of a dense, central, positively charged nucleus surrounded by a
system of electrons.
An element is a pure substance of matter that is made of only one type of atom.
A molecule is two or more atoms chemically combined.
Molecules are the smallest physical unit of an element or compound, consisting of one or
more like atoms in an element (e.g., H2, O2, or N2 etc.) and two or more different atoms in
a compound (e.g.,.H2O, CO2, etc.).
A compound a substance made of more than one kind of atom (e.g.,.H2O, CO2, CH4, etc.).
Page 29 of 34
TEKS 8.5 (D) Chemical Formulas
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