1
Q
What is the enthalpy change of a reaction!?
A
The enthalpy change of a reaction is the heat energy it releases or absorbs per mole
2
Q
What is the symbol for enthalpy change ?!
A
🔼H (Kj/mole)
3
Q
What does this sign in front of 🔼H tell us about the reaction !?
A
It tells us whether the reaction absorbs or releases energy
4
Q
Does breaking bonds absorb or release energy?
A
Breaking bonds, absorbs energy
(Therefore Making bond releases energy)
5
Q
What does the energy level diagram look like for an endothermic reaction?
A
.
6
Q
What does the energy level diagram look like for an exothermic reaction?
A
Chemistry, 5th Form
flashcards
Decks in class (60)
# Cards
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3.1.1 - Introduction9
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3.1.2 - Elements4
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3.1.3 - Compounds7
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3.1.4 - Solutions15
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3.2.1 - Particle Numbers14
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3.2.2 - Electrons4
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3.3.1 - Ion Formation8
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3.3.2 - Ionic Formulae2
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3.3.3 - Ionic Structure And Bonding3
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3.3.4 - Ionic Properties6
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3.4.1 - pH And Indicators20
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3.4.2 - Oxygen And Oxides14
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3.4.3 - Acids, Bases And Alkalis19
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3.4.4 - Acid + Base Reaction7
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3.4.5 - Acid + Carbonate Reaction3
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3.5.1 - Metal Structure, Bonding And Properties6
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3.5.2 - Metal Carbonate Decomposition4
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3.5.3 - Metal + Water And Steam Reactions18
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3.5.4 - Acid + Metal Reaction9
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3.5.5 - Metal Displacement Reactions2
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3.5.6 - Metal Extraction13
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3.5.7 - Iron, Steel And Other Metals31
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4.1.1 - Collision Theory10
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4.1.2 - Effect Of Surface Area9
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4.1.3 - Effect Of Concentration / Pressure9
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4.1.4 - Effect Of Temperature8
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4.1.5 - Effect Of Catalysts9
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4.2.1 - Covalent Bonding4
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4.2.2 - Simple Molecular Substances8
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4.2.3 - Giant Covalent Substances25
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4.2.4 - Bonding Summary3
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4.3.1 - Halogen Elements16
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4.3.2 - Hydrogen Chloride5
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4.3.3 - Halogen Displacements15
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4.4.1 - Relative Formula Mass2
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4.4.2 - Moles2
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4.4.3 - Moles Ratios In Formulae6
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4.4.4 - Mole Ratios In Equations6
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4.5.1 - Crude Oil9
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4.5.2 - Alkanes16
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4.5.3 - Cracking3
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4.5.4 - Alkenes7
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4.5.5 - Addition Polymers10
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4.6.1 - Gas Tests7
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4.6.2 - Cation Tests12
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4.6.3 - Anion Tests10
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5.1.1 - Gas Volumes2
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5.1.2 - Concentration Calculations2
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5.1.3 - Titration6
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5.2.1 - Enthalpy Changes6
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5.2.2 - Bond Breaking And Bond Making5
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5.2.3 - Calorimetry11
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5.3.1 - Making Soluble Salts22
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5.3.2 - Making Insoluble Salts9
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5.4.1 - Alcohols23
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5.4.2 - Carboxylic Acids16
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5.4.3 - Esters12
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5.4.4 - Polyesters10
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5.5.1- Molten Electrolysis30
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5.5.2 - Aqueous Electrolysis0
