Physical and Chemical Change
By Hudson Brock
Physical changes occur when objects or substances undergo a change that does not change their chemical composition. Evidence would be if it changes its color it changes its physical apperance so it is a physical change. Ex. A rock changes color, A frog changes smell, ripping a piece of paper.
When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. Evidence would be if I cooked a turkey and it changes chemically. Ex. Cooking a chicken, digesting food.
Definition: Accompanied by or requiring the absorption of heat.
Definition: Accompanied by the release of heat.
Definition: To cause a form to be deposited in a solid from a solution.