chemistry

  • Created by: talitha
  • Created on: 09-01-13 16:33
a measure of electrons that an atom uses to bond with atoms of another element
oxidation number
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water molecules that form an essential part of the crystalline structure of a compound
water of crystallisation
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any chemical compound formed from an acid when a H+ ion from the acid has now been replaced with a metal, or positive, ion
salt
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the actual number of atoms of each element in a molecule
molecular formula
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a small group of atoms held together by covalent bonds
a molecule
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the amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope
a mole
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the electrostatic attraction between oppositely charged ions
ionic bond
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a 3-D structure of oppositely charges ions, held together by strong ionic bonds
giant ionic lattice
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type of base that dissolves in water forming hydroxide ions
alkali
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a group of the same type of atomic orbitals within a shell (s, p, d, f)
sub shell
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the arrangement of electrons in an atom
electron configuration
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a region within an atom that can hold up to two electrons with opposite spins
atomic orbital
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a group of atomic orbitals with the same principle quantum number or main energy level
a shell
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the repulsion between electrons in different inner shells
electron shielding
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a bond formed by a shared pair of electrons
covalent bond
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an outer shell pair of electrons that is not involved in chemical bonding
lone pair
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has an overall dipole
polar molecule
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has a permanent dipole
polar covalent bond
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the electrostatic attraction between positive metal ions and delocalised electrons
metallic bonding
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electrons that are shared between more than two atoms
delocalised electrons
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a small charge difference that results from a difference in the electronegativites of the bonded atoms
permanent dipole
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a shared pair of electrons which has been provided by one of the bonding atoms only
dative covalent bond
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a measure of the attraction of a bonded atom for the pair of electrons in a covalent bond
electronegativity
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the mass per mole of a substance
molar mass
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a weak attractive force between permanent dipoles in neighbouring molecules
permanent dipole-dipole force
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attractive forces between induced dipoles in neighbouring molecules
van der waals
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a reaction in which a more reactive element displaces a less reactive element from an aqueous solution of the latter's ions
displacement reaction
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the formation of a solid from a chemical reaction (often when two aqueous solutions are mixed together)
precipitation reaction
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the oxidation and reduction of the same element in a redox reaction
disproportionation
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the number of atoms per mole of the carbon-12 isotope
avagadro constant
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a weak attractive force between neighbouring molecules
intermolecular forces
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a strong dipole-dipole attraction between an electron deficient hydrogen atom and a lone pair of electrons on seperate molecules
hydrogen bonds
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the volume per mole of gas molecules (V in dm/ 24 or V in cm/ 24000
molar volume
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amount of solute dissolved per 1dm of solution (n= c*v for dm or n= v in cm/1000
concentration
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Other cards in this set

Card 2

Front

water molecules that form an essential part of the crystalline structure of a compound

Back

water of crystallisation

Card 3

Front

any chemical compound formed from an acid when a H+ ion from the acid has now been replaced with a metal, or positive, ion

Back

Preview of the front of card 3

Card 4

Front

the actual number of atoms of each element in a molecule

Back

Preview of the front of card 4

Card 5

Front

a small group of atoms held together by covalent bonds

Back

Preview of the front of card 5
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