Required practical - Rate of reaction (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does this practical investigate?
What does this practical investigate?
Effect of concentration on reaction rate
What product causes the solution to become cloudy?
What product causes the solution to become cloudy?
Yellow sulfur precipitate
What is placed under the conical flask during the experiment?
What is placed under the conical flask during the experiment?
Black cross drawn on white paper
What is the total volume of solution before adding the acid?
What is the total volume of solution before adding the acid?
50
When should you stop the timer?
When should you stop the timer?
When cross can no longer be seen
Why must the total volume always be 50 ?
Why must the total volume always be 50 ?
To ensure fair testing
What happens to reaction time as sodium thiosulfate concentration increases?
What happens to reaction time as sodium thiosulfate concentration increases?
Time for cross to disappear decreases
Why must you work in a well-ventilated room?
Why must you work in a well-ventilated room?
Sulfur dioxide gas causes breathing issues
What type of variable is concentration in this experiment?
What type of variable is concentration in this experiment?
Independent variable
What type of variable is time in this experiment?
What type of variable is time in this experiment?
Dependent variable
Why does higher concentration lead to faster reaction?
Why does higher concentration lead to faster reaction?
More particles cause more collisions
What does smaller uncertainty in results indicate?
What does smaller uncertainty in results indicate?
More reliable results