
INDEX
of ENERGY CHANGES -
THERMAL ENERGY TRANSFER
Notes
Doc Brown's
Chemistry KS4 GCSE 9-1, IGCSE, O level & A level Revision Notes
INDEX of Exothermic and Endothermic Energy
Changes Revision Notes
Energetics Introduction
-
energy transfers in physical state changes and
chemical reactions, simple calorimetry, calculations etc.
GCSE Chemistry Revision
notes
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Energy changes are an important
facet of chemical reactions. The interaction of molecules or ions often
involves changes in energy due to the breaking and forming of bonds.
Chemical reactions which release energy are called exothermic reactions,
and those that take in (absorb) heat energy are endothermic. These
energy transfer changes produce heating or cooling effects that can be
used in a range of everyday applications.
Interactions between ions in an
electrolyte can be used to produce electricity e.g. in cells and
batteries. The reverse can be carried out and electricity can also be
used to split ionic substances and is a useful means of producing
elements that are too expensive to extract any other way. These topics
are dealt with in the
electrochemistry
sections (see end of energy changes index too).
If you
are an Advanced A Level chemistry student, these pages will help as an introduction, but
then you should follow the A Level links to the more advanced revision
notes and calculation methods - link below.
These revision notes on energy transfers in chemical reactions should prove useful for the new AQA
chemistry, Edexcel chemistry & OCR chemistry GCSE (9–1, 9-5 & 5-1)
science courses.
INDEX
for ENERGY CHANGES
(GCSE/IGCSE/O level Energetics)
1.
Heat changes in chemical/physical
changes - exothermic and endothermic
2. Reversible reactions and energy changes
3. Activation energy and reaction profiles
4. Catalysts
and activation energy
5.
Introduction to bond energy/enthalpy calculations
6.
Calorimeter methods of determining energy changes
and EXAMPLES of experiments you can do
7.
Energy transfer calculations from calorimeter results
See also
Advanced
A Level
Energetics–Thermochemistry – Enthalpies of Reaction, Formation & Combustion
and
enthalpy calculations from calorimetry
data for Advanced A Level chemistry students
Advanced A Level
Energetics INDEX of revision notes on thermochemistry, enthalpy, entropy etc.
See ALSO LINKS to associated
web pages
Fuel Cells
* Simple
Cells and Batteries *
Electrochemistry - electrolysis
Advanced Level
Energetics-Thermochemistry - Enthalpies of Reaction, Formation & Combustion
Foundation tier-easier
GCSE multiple choice QUIZ on exothermic/endothermic reactions etc.
Higher tier-harder
multiple choice GCSE QUIZ on exothermic/endothermic reactions etc.
Foundation tier-easier
multiple choice GCSE QUIZ on exothermic/endothermic reactions etc.
Higher tier-harder
multiple choice GCSE QUIZ on exothermic/endothermic reactions etc.
GCSE/IGCSE/O level notes on Oil-Fuel burning
GCSE/IGCSE/O level Types
of Chemical Reaction Notes
GCSE/IGCSE/O Level Rates of Reaction
Revision Notes
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