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Summary IB Chemistry chapter 5: ENERGETICS CA$7.73
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Summary IB Chemistry chapter 5: ENERGETICS

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  • Course
  • Chemistry
  • Institution
  • 1st Degree
  • Book
  • Pearson Baccalaureate Chemistry Higher Level 2nd Edition Print and Online Edition for the IB Diploma

Everything you need to help you with Chemistry chapter 5. These notes are perfectly summarized and organized in subtopic. Includes a compilation of information from the textbook, study guides, class notes and other IB resources. Super easy to read and a great amount of information to help you ace ...

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  • Yes
  • December 15, 2021
  • 6
  • 2020/2021
  • Summary

Subjects

  • chemistry
  • energetics
  • chapter 5
  • ib
  • sl
  • hl
  • sl amp hl

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ENERGETICS

Keywords
● Heat: Amount of energy transferred between hot to cold (between
system to surrounding)
● Temperature: Average kinetic energy of all particles in a substance
● Enthalpy: Heat content of a system
● Open system: Where mater and energy can move freely between the
system and surrounding
● Closed system: Where energy moves freely between then system
and surrounding
● Isolated system: Where there is no exchange of energy or matter

Exothermic reactions
● Energy is released
● Negative delta H/enthalpy
● Formation of bonds
● Temperature increases


Endothermic reactions
● Energy is absorbed
● Positive delta H/enthalpy
● Breaking of bonds
● Temperature decreases

, Standard enthalpy
● 100 kpa
● 298 k
● 1 mol dm-3
● All substances in standard state


Bond enthalpy
● Energy needed to break 1 mol of covalent bond in a gaseous
molecule
● Values are averages therefore are not specific for each compound

Formation reaction
● The energy change when 1 mol of a substance is formed in its
standard state from its element in their standard state under standard
conditions

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