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APHY101Ch2Chemistry4-6
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This is formed when two or more atoms combine
molecule
Depicts the numbers and kinds of atoms in a molecule
molecular formula
Shows how atoms bond and are arranged in a molecule
structural formula
The region of space electrons occupy one or more of
electron shells (energy shells)
This is when the outer shell attempts to be filled to 8 electrons
octet rule
Cannot form chemical bonds
inert
Electron in the outer shell of atom that can combine with other atoms to form molecules
valence electrons
Atoms that are not reactive and have completely full outermost electron shells
inert atoms
Atoms that gain or lose electrons and become electrically charged
ions
Atoms that become positively charged because they lost electrons
cations
Atoms that become negatively charged because they gain electrons
anions
Bond formed between two opposite charged ions (between an anion and cation)
ionic bonds
Formed when atoms share electron in an attempt to fill the outer shell
covalent bond
Specialized molecule in which electrons are not shared equally
polar
Formed by the attraction of a positive hydrogen end of a polar molecule to the negative nitrogen or oxygen end of another polar molecule
hydrogen bond
Substances being changed in a chemical reaction
reactants
Substances formed at the end of a chemical reaction
products
Occurs when two or more atoms, ions, or molecules bond to form a more complex structure
synthesis reaction
Occurs when the bonds of a reactant molecule break from simpler molecules
decomposition reaction
Occurs when parts of two different kinds of molecules trade positions
exchange reaction
Occurs when products can change back to the reactant or reactants
reversible reactions
Molecules that influence the rates of chemical reactions but are not consumed in the reactions
catalysts
What happens to the charge of an atom if it either gains or loses an electron?
The electrical charge changes
Why do atoms combine with other atoms?
To form elements
Author
aphy101
ID
257294
Card Set
APHY101Ch2Chemistry4-6
Description
Chemistry Ch 2 Topics 4-6
Updated
10/17/2017, 1:15:02 AM
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