Science - Chemistry Part 2

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Terms in this set (...)

Anion
An ion with a negative charge. Formed by gaining electrons
Cation
An ion with a positive charge. Formed by losing electrons.
Metals
They normally lose electrons during chemical reactions. Usually, form positive ions.
Non-metals
They normally gain electrons during chemical reactions. Usually form negative ions.
Ion
An atom that has an electrical charge.
Chemical bonding
The force that holds atoms together.
Ionic bond
a chemical bond between oppositely charged ions.
Electron dot diagram (aka Lewis structures)
A shorthand representation of the valence electrons in an atom.
Chemical formula
Chemical symbols that show the ratio and amount of elements in a compound.
How to write the formula for an ionic compound:
write the symbol for your metal first, then your nonmetal second.
Naming ionic compounds
The name of the metal comes first, followed by the name of the nonmetal, changing the nonmetal's ending to "ide".
ionic compounds
form salts
Ionic compounds will conduct electricity
when dissolved in a liquid
malleability
metal being hammered into a thin sheet
ductility
metal that can be drawn into a thin wire
valence electrons
outermost electrons which will determine bonding.
Octet Rule
Atoms gain or lose electrons to get a full outermost energy level.
covalent bond
a chemical bond that results from the sharing of electrons
Subscripts
tell the amount of atoms in a compound
diatomic molecule
elements that covalently bond with themselves to form a molecule