The speed of a chemical reaction is affected by temperature, concentration, particle size and the presence of a catalyst. It can be calculated by measuring changes in reactants/products.
If the temperature is increased, the particles have more energy and so move quicker. Increasing the temperature increases the rate of reaction because the particles collide more often and with more energy. The higher the temperature, the faster the rate of a reaction will be.
Sodium and chlorine react vigorously when heated, giving an orange flame and producing white
sodium chloride.
sodium + chlorine 鈫 sodium chloride
2Na(s) + Cl2(g) 鈫 2NaCl(s)
Watch this video to see the correct procedure for this demonstration.
Look at the graph of the reaction between hydrochloric acid and calcium carbonate. Notice how an increase in temperature leads to an increase in the speed of release of carbon dioxide, but not the total volumeThe volume of a three-dimensional shape is a measure of the amount of space or capacity it occupies, eg an average can of fizzy drink has a volume of 330 ml. of carbon dioxide released.