Core practical - Rate of reaction (AQA GCSE Chemistry): Flashcards
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Practise the cards
12 cards from this deck
What this practical investigates
What this practical investigates
How concentration affects reaction rate
Reactants used in this practical
Reactants used in this practical
Sodium thiosulfate and hydrochloric acid
Colour of precipitate formed
Colour of precipitate formed
Yellow
Substance causing cloudiness
Substance causing cloudiness
Sulfur
Volume of sodium thiosulfate used
Volume of sodium thiosulfate used
cm
Volume of hydrochloric acid used
Volume of hydrochloric acid used
cm
When to stop the timer
When to stop the timer
When cross no longer visible through cloudy mixture
Effect of higher concentration on rate
Effect of higher concentration on rate
Higher concentration leads to faster reaction rate
Why higher concentration increases rate
Why higher concentration increases rate
More particles in same space, more frequent collisions
Independent variable
Independent variable
Concentration of sodium thiosulfate
Dependent variable
Dependent variable
Time taken for cross to disappear
Concentration-time relationship type
Concentration-time relationship type
Inverse: concentration up, time down