Chemistry of Microbiology

Atom

smallest unit of matter

 

atoms interact to form bonds

 

bonds form molecules

Electrons

 

Protons

 

Neutrons

=negative charged particles

 

=positive charged particles

 

=neutral charged particles

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

occurs whenever two are going to share electrons

 

stronger than ionic bonds

Hydrogen Bond

hydrogen bonds to oxygen or nitrogen bonds

 

very weak bond

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

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