What is a catalyst, and how does it affect the rate of reaction?
A catalyst is a substance which provides an alternative pathway requiring a lower activation energy for the chemicals to react, and speeds up the rate of reaction. A catalyst also remains chemically unchanged at the end of the reaction.
JE
Related Chemistry GCSE answers
All answers ▸Describe and explain how the reactivity of the elements changes as you go down group 1
Given the balanced equation: MgCO3 + 2HCl --> MgCl2 + H2O + CO2, if 5 grams of MgCO3 is used, what volume of CO2 is produced? (molar mass of MgCO3 is 84.3 g/mol)
What is the difference between an exothermic and an endothermic reaction?
Explain the nuclear model