GCSE Science-Chemistry Wordfill worksheet: THE RATES OF CHEMICAL REACTIONS

Site Meter * Do online OR printout, do, return to check answers. * Rates of Reactions Notes * AQA * CCEA * Edexcel * OCR 21stC * OCR Gateway * WJEC * EMAIL comment?query * Doc Brown's Chemistry updated June 13th 2009 *

   area      bonds      catalyst      chance      changed      collide      collisions      concentration      frequently      kinetic      loss      pressure      product      rate      smaller      solid      surface      temperature      used   
Image466.gif1. The rate of reaction means the rate of of reactant or rate of formation of .

2. Chemical reactions can only take place when particles into each other.

3. There are several ways to change the of a reaction.

4. Increasing the increases the energy of the particles and they more and with greater energy.

5. Increasing the of a reactant in solution increases the of a 'fruitful' collision between particles.

6. For gaseous reactants increasing the increases the rate of reaction and is the same as increasing the .

Image461.gif7. A reactant will react faster if it is broken into pieces. This increases the and allows more between the reactants.

8. Adding a can also speed up a reaction because it helps break chemical between atoms. However, although it helps the reaction to go faster, a is not at the end of a reaction and could be again.