Measuring Rates of Reaction (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a steep gradient at the start of a volume-time graph indicate?
What does a steep gradient at the start of a volume-time graph indicate?
Fastest reaction rate
In the precipitate method, how is reaction rate calculated?
In the precipitate method, how is reaction rate calculated?
Rate =
Which method measures mass decrease as gas escapes during a reaction?
Which method measures mass decrease as gas escapes during a reaction?
Changes in mass method
Why must the reaction vessel be unsealed when using the mass change method?
Why must the reaction vessel be unsealed when using the mass change method?
Gas must escape for accurate measurement
In the cross method, if the cross disappears in 45s, what is the rate?
In the cross method, if the cross disappears in 45s, what is the rate?
s⁻¹
What does a zero gradient on a volume-time graph indicate?
What does a zero gradient on a volume-time graph indicate?
Reaction has stopped
Which apparatus is used to measure gas volume in gas-producing reactions?
Which apparatus is used to measure gas volume in gas-producing reactions?
Gas syringe system
In the precipitate method, what does a shorter time to block the cross indicate?
In the precipitate method, what does a shorter time to block the cross indicate?
Faster reaction rate
What safety equipment must always be worn when handling acids?
What safety equipment must always be worn when handling acids?
Safety glasses
Which method is best for reactions producing insoluble solids that cloud the solution?
Which method is best for reactions producing insoluble solids that cloud the solution?
Precipitate formation method