Thursday, November 11, 2010

Midterm Review Question #8

8) Explain the difference between chemical properties.  Describe some of the physical and chemical changes involved in cooking.

    -Produces matter different from original composition in a chemical change that can't be restored to                        
original state.

    -Can be observed and measured without changing substance's composition and can be restored to original state.

Cooking Example:
    -When baking a cake a key ingredient is baking soda which causes a chemical reaction enabling the cake to rise.  This is chemical because the cake can never be turned back into the same batter.