1. Compare and contrast the rate of solution formation between the three physical forms of salt that were placed in the vial and not agitated with the three forms of salt that were placed in the vial and were agitated.


(7 points)
Score

2. On the basis of your results, what is the relationship between the temperature of the solvent and the rate of solution formation?


(6 points)
Score

3. Use your knowledge of collision theory to explain the results of your experiments in this laboratory.


Your Score ___ of 20

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chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.