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Chemistry general > Definitions - Y1 > Flashcards

Definitions - Y1 Flashcards

1
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releases OH- ions

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13
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mole

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19
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The ability for an atom to attract electrons in a covalent bond.

20
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Perodicuty

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22
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homologous series

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a series of organic compounds having the same functional group but with each successive member differing by CH2

23
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structural isomers

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24
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Dative covalent

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the electrostatic attraction between two nuclei and a shared pair of electrons which were both donated by one of the atoms

25
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Average bond enthalpy

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A measurement of covalent bond strength

26
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Ionisation energy

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The minimum amount of energy required to remove 1 mole of electrons from 1 mole of atoms in the gaseous state.

  • Endothermic
27
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What is successive ionsation.

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The removal of more than one electron from the same atom.

28
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What is meant by enpalthy change of formation

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When 1 mole of compound is formed from its elements under standard states and conditions.

29
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Define enpalthy change of reaction

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The enpalthy change when the number of moles of reactants as specified in the balanced equation reacts together

30
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Define enthalpy change of combustion

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When one mole of substance completely burnt in excess oxygen under standard states and conditions

31
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Define enpalthy change of neutralisation

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The enpalthy change when solutions of an acid and alkali react together under standard states and conditions to produce 1 mole of water.

32
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33
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Hydrocarbon

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is a compound consisting of hydrogen and carbon only

34
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Saturated:

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Contain single carbon-carbon bonds only

35
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Unsaturated

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Contains a C=C double bond

36
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Molecular formula

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The formula which shows the actual number of each type of atom

37
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Empirical formula

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shows the simplest whole number ratio of atoms of each element in the compound

38
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General formula

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algebraic formula for a homologous series e.g. CnH2n

39
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Displayed formula

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show all the covalent bonds present in a molecule

40
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Aliphatic

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a compound containing carbon and hydrogen joined together in straight chains, branched chains or
non-aromatic rings

41
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Alicyclic

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an aliphatic compound arranged in non-aromatic rings with or without side chains

42
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Aromatic

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a compound containing a benzene ring

Chemistry general (7 decks)

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