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Chemistry AS Level AQA Physical Chemistry Revision $7.49   Add to cart

Exam (elaborations)

Chemistry AS Level AQA Physical Chemistry Revision

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  • Course
  • A-level chemistry
  • Institution
  • A-level Chemistry

Chemistry AS Level AQA Physical Chemistry Revision

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  • May 21, 2024
  • 5
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
  • A-level chemistry
  • A-level chemistry
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RevisionKing
Chemistry AS Level AQA Physical
Chemistry Revision
Activation energy - Answer>> The minimum energy that a
particle needs in order to react

Atom economy - Answer>> mass of desired products/total
mass of reactants x 100

Atomic orbital - Answer>> A region of space where there is a
high probability of finding an electron

Avogadros constant - Answer>> The total number of particles in
one mole of a substance or 6.022 x 10^23

Catalyst - Answer>> A substance that alters the rate of a
chemical reaction but is not used up in the reaction

Carbocation - Answer>> An organic ion in which one of the
carbon atoms has a positive charge.

Co-ordinate bonding - Answer>> Covalent bonding in which
both the electrons in the bond comes from one of the atoms in the
bond.

Covalent bonding - Answer>> Describes a chemical bond in
which electrons are shared between two atoms

Delocalised electrons - Answer>> Electrons that are spread
over several atoms and help to bond them together

, Dipole-dipole forces - Answer>> An intermolecular force that
results from the attraction between molecules with permanent
dipoles

Displayed formula - Answer>> The formula of a compound
drawn out so that each atom and each bond is shown

Electron pair repulsion theory - Answer>> Pairs of electrons
around a central atom repel each other equally taking up positions
as far away as possible from each other

Electronegativity - Answer>> The power of an atom to attract a
pair of electrons in a covalent bond

Electrostatic forces - Answer>> The forces of attraction and
repulsion between electrically charged particles

Empirical formula - Answer>> The simplest whole number ratio
in which the atoms in a compound combine together

Endothermic - Answer>> Where heat is taken during a reaction
and the temperature drops

Exothermic - Answer>> Where heat is given out during a
reaction and the temperature rises

Hydrogen bonding - Answer>> Where a hydrogen atom
covalently bonded to an Nitrogen, Oxygen or Fluorine atom
interacts with another Nitrogen, Oxygen or Fluorine atom

Incomplete Combustion - Answer>> A combustion reaction in
which there is insufficient oxygen

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