Rates of Reaction (HSC SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
When measuring rate by time to completion, what does a shorter time indicate?
When measuring rate by time to completion, what does a shorter time indicate?
A faster reaction rate
At , the indigestion tablet took 22 seconds. At , it took 78 seconds. What happened?
At , the indigestion tablet took 22 seconds. At , it took 78 seconds. What happened?
Rate increased with temperature
What does 'rate of reaction' precisely refer to?
What does 'rate of reaction' precisely refer to?
Rate reactants consumed or products form
In the reaction , what colour change is observed?
In the reaction , what colour change is observed?
Colourless to brown
What is the formula for average rate of reaction using delta notation?
What is the formula for average rate of reaction using delta notation?
What are the typical units for rate of reaction?
What are the typical units for rate of reaction?
On a concentration-time graph, what does a steep gradient indicate?
On a concentration-time graph, what does a steep gradient indicate?
A fast rate of reaction
How is rate expressed when calculated from a reactant graph with negative gradient?
How is rate expressed when calculated from a reactant graph with negative gradient?
As a positive value (magnitude)
Why does reaction rate typically decrease as the reaction proceeds?
Why does reaction rate typically decrease as the reaction proceeds?
Reactant concentration decreases
In the disappearing cross experiment, what does a shorter time for cross to vanish indicate?
In the disappearing cross experiment, what does a shorter time for cross to vanish indicate?
A faster reaction rate