Calculating Rates of Reactions (Edexcel GCSE Chemistry): Flashcards
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What is the formula for calculating reaction rate?
What is the formula for calculating reaction rate?
Rate = change in concentration / time taken.
How can temperature affect reaction rates?
How can temperature affect reaction rates?
Higher temperature increases the reaction rate.
What effect does concentration have on rates?
What effect does concentration have on rates?
Increased concentration usually speeds up reactions.
Name a factor that increases reaction rate in gases.
Name a factor that increases reaction rate in gases.
Higher pressure can increase gas reaction rates.
What is the impact of surface area in reactions?
What is the impact of surface area in reactions?
Larger surface area increases reaction speed.
How does a catalyst affect reaction rates?
How does a catalyst affect reaction rates?
A catalyst speeds up the reaction without being consumed.
What role does activation energy play in reactions?
What role does activation energy play in reactions?
It's the energy needed to initiate a reaction.
Why measure how fast a gas is produced in reactions?
Why measure how fast a gas is produced in reactions?
It helps determine the reaction rate effectively.
What happens to reaction rates as the reaction proceeds?
What happens to reaction rates as the reaction proceeds?
Rates often decrease as reactants are consumed.
How can you experimentally measure reaction rates?
How can you experimentally measure reaction rates?
You can track changes in mass or volume of products.