Calculating Rates of Reactions (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 the rate of a chemical reaction tell us?
What does the rate of a chemical reaction tell us?
How quickly the reaction happens
Rate of reaction measures how fast reactants are used up or what else?
Rate of reaction measures how fast reactants are used up or what else?
How quickly products are formed
Why are rates of reaction particularly useful in industrial processes?
Why are rates of reaction particularly useful in industrial processes?
They help understand reaction efficiency
What is the formula for mean rate using reactants?
What is the formula for mean rate using reactants?
What is the formula for mean rate using products?
What is the formula for mean rate using products?
What does a higher rate of reaction indicate?
What does a higher rate of reaction indicate?
A faster reaction
In which units is the amount of reactant or product usually measured?
In which units is the amount of reactant or product usually measured?
Grams or cubic centimetres
In which unit is time measured when calculating reaction rates?
In which unit is time measured when calculating reaction rates?
Seconds
Which units can be used to express the rate of reaction?
Which units can be used to express the rate of reaction?
g/s or cm³/s
If 0.12 g of Mg is used in 45 s, what is the mean rate in g/s?
If 0.12 g of Mg is used in 45 s, what is the mean rate in g/s?
0.00267 g/s
If 100 cm³ of gas forms in 45 s, what is the mean rate in cm³/s?
If 100 cm³ of gas forms in 45 s, what is the mean rate in cm³/s?
2.22 cm³/s
What does a lower rate of reaction suggest?
What does a lower rate of reaction suggest?
A slower reaction