What is rate of reaction BBC?

The rate of a reaction is a measure of how quickly a reactant is used up, or a product is formed.

How does temperature affect the rate of reaction BBC Bitesize?

Increasing the temperature a reaction takes place at increases the rate of reaction. At higher temperatures, particles can collide more often and with more energy, which makes the reaction take place more quickly.

How do you describe the rate of reaction?

The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically.

How to calculate the rate of a reaction?

The rate of reaction can be analysed by plotting a graph of mass or volume of product formed against time. The graph shows this for two reactions. The steeper the line, the greater the rate of…

How is surface area related to reactant rate?

This is done by cutting the substance into small pieces, or by grinding it into a powder. Compared to a reaction with lumps of reactant, the graph line for the same reaction but with powdered reactant:

What causes the rate of a chemical reaction to increase?

Only some of all the collisions that take place cause a chemical change to happen. These are called ‘successful’ collisions. The greater the number of ‘successful’ collisions, the faster the rate of a reaction. This is called the ‘collision theory’. There are four factors that affect the rate (speed) of a chemical reaction:

How long does a reaction take in the lab?

In addition, how long a reaction is observed for depends on the rate of reaction. Reactions can vary from being almost instantaneous to taking years to complete. In the lab, reactions are usually followed over a few seconds or minutes. Rusting is a slow reaction. Give four examples of a very fast reaction.