Chemistry - Unit 4: Bonding

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so this whole unit is on bonding, but first, let's remind ourselves, WHY do atoms form bonds?
toooo beeee ~sttabbbbleeee~ remember that.
what are ionic compounds typically composed of?
a metal (+) and a non-metal (-)
hey google, define "monatomic atom"
a single atom (key word: mono) with a + or - charge cuz of the loss or gain of electrons
in what order do the ions go when writing an ionic bond's name or formula?
cation (+) then anion (-)
what kind of structure do ionic compounds have?
a crystalline structure with alternating + and - charges
what are some characteristics of ionic bonds?
- transfer of electrons - high melting points - stronger bonds - hard, brittle - electrically reactive - soluble in water
why are ionic bonds soluble in water?
the alternating + and - charges allow for the water to easily break apart the particles
what kind of elements are found in covalent bonds
two or more non-metals
what are some characteristics of covalent bonds?
- sharing of electrons - low melting points - weaker bonds - relatively soft (wtv that means) - do not react to electricity - not soluble
what is another term for when two or more non-metals form a covalent bond?
it is considered a ~molecule~
we didn't learn a whole lot about this, but ur gonna need to know it. so what is a metallic bond?
the bond between metals, also considered the "sea of electrons"
describe the structure of a metallic bond pretty pls
crystalline structure, but electrons are mobile and allowed to run wild in the metal
what is the term for when electrons flow freely in metallic bonds
we call it -~zap zap electricity~-
pop quiz: ionic vs. covalent vs. metallic bond. GO!
ionic bonds -> metal and nonmetal, electrons are GIVEN, totally transferred covalent bonds -> 2 or more nonmetals, electrons are SHARED metallic bond -> 2 or more metals, sea of electrons do whatever the heck they want
wuts an alloy?
mixtures of 2 or more elements, BUT at least 1 must be a metal ie: Brass -> Cu+Zn
how many electrons are found in a single bond?
how many electrons are found in a double bond?
4 (see the pattern? :D)
how many electrons are found in a triple bond?
6, you get the gist.
NAMING TIME! LESSGO (don't flip the card over)
you little rebel.
this digital flashcard is tricky to work with, so here's what's gonna go down ->
I'll give you the name of a compound, and u determine the kind of compound (ionic or covalent) write the formula OR I'll give you 2 elements, u determine the kind of compound, name it, and write the formula :D
Potassium + Sulfur
knowt flashcard image
Dinitrogen Trisulfide
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Copper (II) Phosphate
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Cobalt (II) + Nitrogen
note: don't confuse the nitride, nitrite, nitrate. it's not fun.
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Carbon + Oxygen
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time for...VSEPR
ok but I keep reading it as "VESPER" and then I read it as "VECTOR" as in "VECTOR! That's me, because I commit crimes with both >DIRECTION< AND ~MaGNItuDE~. Oh yeAH" carry on.
gimme the tea on Linear Bonds
- bonding pairs: 2 - lone electron pairs: 0
okay how about linear bonds' older sibling Linear w/ Multiple Lone Pairs?
- bonding pairs: 2 - lone pairs: 3
2 atoms will ALWAYS have a bond shape of...
linnnnearrrrr haha I read that as "cleooouuurrrrr"
describe the /bent\ bond
- bonding pairs: 2 - lone pairs: 1 or 2
how bout that Trigonal Planar bond?
- bonding pairs: 3 (like the sides of a triannngleee how clevah) - lone pairs: 0
TRIGONAL PYRAMIDAL hehe that rhymes
- bonding pairs: 3 - lone pairs: 1
TETRAHEDRAL sounds so pretentious
- bonding pairs: 4 - lone pairs: 0