Rate: pressure, surface area (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is the surface area to volume ratio of a cube?
What is the surface area to volume ratio of a cube?
What is the total surface area of eight cubes?
What is the total surface area of eight cubes?
units²
Why do smaller pieces of solid react faster than larger pieces?
Why do smaller pieces of solid react faster than larger pieces?
They have more surface area exposed
Why do powdered medicines work faster than tablets?
Why do powdered medicines work faster than tablets?
Powder has higher surface area
What happens to gas molecules when pressure increases?
What happens to gas molecules when pressure increases?
They get pushed closer together
How does increased pressure affect collision frequency in gases?
How does increased pressure affect collision frequency in gases?
Increases collision frequency
If you double the pressure of a gas reaction, what typically happens to the reaction rate?
If you double the pressure of a gas reaction, what typically happens to the reaction rate?
It doubles
In the marble chip experiment, which produces gas faster at the start?
In the marble chip experiment, which produces gas faster at the start?
Smaller marble chips
How does the total amount of gas compare between large and small marble chips?
How does the total amount of gas compare between large and small marble chips?
Both produce same total gas
If you put three times as many gas molecules in the same space, how much faster might it react?
If you put three times as many gas molecules in the same space, how much faster might it react?
Roughly three times faster
Which factor is most important for increasing the rate of solid reactions?
Which factor is most important for increasing the rate of solid reactions?
Increasing surface area