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Chatper 2
Chemistry Portion
20
Anatomy
Undergraduate 1
01/21/2010

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Term
Matter
Definition
Anything that occupies space and has mass.
Term
Mass
Definition
amount of matter in any living organism or  non living thing.
Term
chemical elements
Definition
substances that cannot be broekn down into a simpler form
Term
which 4 elements make up 96% of the human body?
Definition
oxygen(O), carbon(C), hydrogen(H), and nitrogen(N)
Term
what elements make up 3.8 % of the body
Definition
Calcium (Ca), Phosphorus (P), Potassium (K), Sulfur (S), Sodium (Na) Clorine(Cl) magnesium (mg) and iron (Fe)
Term

Free radical

 

 

 

 

 

 

Definition
an ion that has an unpaired electron in its outter shell
Term
Chemical compounds
Definition
forces that binds atoms of molecules and compounds together, resisting their separation
Term
valence shell
Definition
outer shell holding 8 electrons
Term
ionic bonds
Definition
positive and negative charged ions that are attracted to each other
Term
An atom that gives away an electron is know as and has what charge?
Definition
cation and is positivly charged.
Term
An ion that recieve an electron is called and has whats charge?
Definition
anion and has a negative charge
Term
electrolyte
Definition
an ionic compound that breaks apart into cations and anions when dissovled
Term
covalent bond
Definition
form bonds by sharing electrons
Term
hydrogen bond
Definition
forms when a hydrogen atoms with a partial postive charge attracts another atom with a partial negative charge.
Term
chemical reaction
Definition
when new bonds are formed and old bonds are broken
Term
chemical energy
Definition
 a form of potential energy that is stored in the bonds of molecules
Term
synthesis reactions
Definition
when two or more molecules combine to form new and larger molecules
Term
anabolism
Definition
all synthesis reactions that occur in the body
Term
decomposition reaction
Definition
molecules split apart
Term
catabolism
Definition
decomposition reactions that occur in your body
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