Rate of Reaction (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
12 cards from this deck
What do rate graphs show?
What do rate graphs show?
Amount of reactants/products changes over time
Why rate graphs show curves
Why rate graphs show curves
Rate of reaction changes as reaction progresses
Reactant curve direction
Reactant curve direction
Slopes downwards (reactants used up)
Product curve direction
Product curve direction
Slopes upwards (product formed)
When is the curve steepest?
When is the curve steepest?
At beginning of reaction
Why reaction fastest at start
Why reaction fastest at start
Plenty of reactant particles to collide
Why curve becomes less steep
Why curve becomes less steep
Fewer particles to collide as reactants used up
What does a plateau mean?
What does a plateau mean?
Reaction stopped, no reactants left or equilibrium
How to find rate from graph
How to find rate from graph
Calculate gradient (slope) of curve
What is a tangent?
What is a tangent?
Line touching curve at point without crossing
Rate of reaction formula
Rate of reaction formula
Calculate rate: 10 cm³ gas in 2s
Calculate rate: 10 cm³ gas in 2s
5 cm³/s