Chapter 8 Flashcards
What are the two ways of measuring the rate of reaction?
- The rate at which a reactant is used up
- The rate at which a product is formed
What is the equation for the rate of reaction?
amount of reactant used or amount of product formed / time taken
When will the rate of reaction increase?
- temperature increases
- concentration of a dissolved reactant is increased
- solid reactants are broken into smaller pieces
- a catalyst is used
What must happen for a chemical reaction to occur?
the reactant particles must collide
What happens if a collision has too little energy?
a chemical reaction doesn’t take place
What does the rate of reaction depend on?
the rate of successful collisions between the reactant particles
What happens if there are a lot of successful collisions?
the faster the rate of reactant
What happens to the atoms when molecules collide?
they break
When a collision is successful what must the particles have and what is it called?
they must possess enough energy, called the activation energy
If the temperature is increased what will happen to the collisions?
there will be more energy in the collisions and will have more activation energy
