COMPOSITION OF MATTER
ELEMENTS AND ATOMS
By Sierra, Rachel, Haley
What are elements?
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Elements are the building blocks of all matter.
Elements cannot be broken down into simpler
substances.
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Examples:
Oxygen
 Carbon
 Gold
 Copper
 Iron

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A complete listing of the elements appears in the
periodic table.
Elements in the human body
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Oxygen
Carbon
Hydrogen
Nitrogen
3.2 %
Nitrogen
9.5%
Hydrogen
65% oxygen
18.5%
Carbon
Major Roles of Elements in the body…

Oxygen
 Reacts
with glucose or food to produce ATP Energy and
the Carbon dioxide that we breathe out.
 Makes up 65.0% of our body mass.
Major Roles of Elements in the body…

Carbon
 Carbon
is required to form
proteins, carbohydrates, fats
and nucleic acid.
 Also helps determine the
body structure.
 Makes up 18.5% of our body mass.
Major Roles of Elements in the body...

Hydrogen
 Hydrogen
atoms help to form water molecules, which
are essential in our bodies.
 Hydrogen also influences the pH of body fluids.
 Makes up 9.5% of our body mass.
Major Roles of Elements in the body…

Nitrogen
▫ Nitrogen is found in many organic molecules,
including proteins and nucleic acids that make up
DNA.
▫ Makes up 3.2% of our body mass.
Nitrogen Base
Other Elements found in the body…
Less than 3.9% of the body
Iodine
Calcium
Phosphorus
Potassiun
Sulfur
Sodium
What are Atoms?


Atoms are the smallest particle that still retains its
special properties.
Atoms are the building blocks of elements.
Atomic Symbol…

Every element is designated by a one- or two-letter
chemical shorthand called a atomic symbol.
Work Cited
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"Cellular Respiration Tutorial." Hartnell College Biology Tutorials. Hartnell College,
n.d. Web. 23 Aug 2013.
<http://www.hartnell.edu/tutorials/biology/cellularrespiration.html>.
"What Does Carbon Do for Human Bodies?." Healthy Living. Gannett, n.d. Web. 23
Aug 2013. <http://healthyliving.azcentral.com/carbon-human-bodies-4307.html>.
"Basic Physiology." Toxicology Schools . Toxicology Schools, n.d. Web. 23 Aug 2013.
<http://www.toxicologyschools.com/Free_Toxicology_Course2/a25.htm>.
"Mitochondrial DNA Testing." Mitochondrial DNA Testing. DNA Ancestry. Web. 23
Aug 2013. <http://www.mitochondrialdnatesting.com/>.
Marieb, Elaine. “Elements and Atoms.” Essentials of Human Anatomy and Physiology.
Seina Beauparlant. 8th ed. San Francisco: Pearson Benjamin Cummings, 2006. 2729. Print.