When reacting particles COLLIDE with ENOUGH ENERGY (Activation Energy)
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How does increasing temperature effect rate of reaction?
Makes particles collide MORE FREQUENTLY, and MORE ENERGETICALLY. This makes the reaction faster.
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How does increasing pressure of reacting gases effect the rate of reaction?
Increases the FREQUENCY OF COLLISIONS in PARTICLES, increasing the rate of reaction
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How does increasing the surface area of solid reactants effect the rate of reaction?
Increases the FREQUENCY OF COLLISIONS of PARTICLES, increasing the rate of reaction
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What are catalysts?
Catalysts are products that CHANGE the rate of reaction, but ARE NOT used up during the reaction. Different reactions need different catalysts!
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Why are catalysts used in industrial processes?
To reduce costs.
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When chemical reactions occur, how is energy transferred to surroundings?
Energy is transferred TO or FROM surroundings (endothermic/exothermic)
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Name 3 exothermic reactions, and 1 everyday use from an exothermic reaction
COMBUSTION, OXIDISATION, NEUTRALISATION. Exothermic reactions can be used for hand warmers.
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Name an example of an exothermic reaction, and an everyday use.
THERMAL DECOMPOSITIONS. Some SPORTS INJURY PACKS use endothermic reactions.
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If a reaction can be both EXOTHERMIC, and ENDOTHERMIC, how much energy is transferred?
The same amount of energy will be transferred in each case.
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Meaning of state symbols ((s), (l), (g), (aq))?
(s) = Solid, (l) = Liquid, (g) = Gas, (aq) = Dissolved in water
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How can you create SOLUBLE salts?
Reacting acids with = METALS, INSOLUBLE BASES, ALKALIS
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How can salt solutions be used to produce solid salts?
By being crystallised.
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How can you create INSOLUBLE salts?
Mixing correct solutions of ions so that a precipitate is formed. Precipitation can be used to remove unwanted ions from solutions, including water treatment.
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What are BASES?
METAL OXIDES, and HYDROXIDES, SOLUBLE HYDROXIDES however, are called ALKALIS
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Other cards in this set
Card 2
Front
When can chemical reactions occur?
Back
When reacting particles COLLIDE with ENOUGH ENERGY (Activation Energy)
Card 3
Front
How does increasing temperature effect rate of reaction?
Back
Card 4
Front
How does increasing pressure of reacting gases effect the rate of reaction?
Back
Card 5
Front
How does increasing the surface area of solid reactants effect the rate of reaction?
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