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Chemistry of Microbiology
Terms for Chapter 2
13
Microbiology
Undergraduate 1
09/02/2009

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Term
Atom
Definition

smallest unit of matter

 

atoms interact to form bonds

 

bonds form molecules

Term

Electrons

 

Protons

 

Neutrons

Definition

=negative charged particles

 

=positive charged particles

 

=neutral charged particles

Term
Isotopes
Definition
atoms with different numbers of neutrons, BUT the same amount of electrons
Term
Valence
Definition
how many electrons are on outermost shell
Term
Compound
Definition
what you get when you combine two different molecules
Term
Chemical Bonds
Definition
forces holding atoms in compound
Term
Ionic Bonds
Definition
occurs when there is an attraction of opposite charges
Term
Covalent Bond
Definition

occurs whenever two are going to share electrons

 

stronger than ionic bonds

Term
Hydrogen Bond
Definition

hydrogen bonds to oxygen or nitrogen bonds

 

very weak bond

Term
Endergonic Reaction
Definition
reaction that absorb energy
Term
Exergonic Reaction
Definition
reactions that release energy
Term
Synthesis Reaction
Definition
when smaller ions, atoms, or molecules form a larger ion, atom, or molecule
Term
Decomposition Reaction
Definition
whenever you split something into atoms, ions, or molecules
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