Exothermic & Endothermic Reactions (AQA GCSE Chemistry Combined Science): Flashcards
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What is an exothermic reaction?
What is an exothermic reaction?
Reaction that gives out energy to surroundings
Product energy vs reactant energy (exothermic)
Product energy vs reactant energy (exothermic)
Products have less energy than reactants
Temperature change in exothermic reactions
Temperature change in exothermic reactions
Increases
What is a reaction profile?
What is a reaction profile?
Graph showing energy changes during a reaction
Reactant vs product energy levels (exothermic)
Reactant vs product energy levels (exothermic)
Reactants higher, products lower
Three types of exothermic reactions
Three types of exothermic reactions
Combustion, oxidation, neutralisation
What does combustion release?
What does combustion release?
Heat and light
Neutralisation reaction example
Neutralisation reaction example
Acids reacting with alkalis
Reactant in hand warmers
Reactant in hand warmers
Iron powder (reacts with oxygen)
Hand warmer chemical equation
Hand warmer chemical equation
Self-heating drink chemical equation
Self-heating drink chemical equation
What is activation energy?
What is activation energy?
Energy hill reactants must climb to start reaction
Where energy goes in exothermic reactions
Where energy goes in exothermic reactions
Into the surroundings as heat
Example of oxidation reaction
Example of oxidation reaction
Metals reacting with oxygen