Gabrielle+Gutekunst


 * ASSIGNMENT 3: Element Advertisement**


 * ASSIGNMENT 2: Classification Flowchart**




 * ASSIGNMENT 1: Physical and Chemical Properties and Changes**

__**Definitions: **__
Chemical Change- Any change from one state, which is accompanied by alteration of the chemical composition. Physical Change- Any process involving a change from one state to another without alteration of the chemical composition. Chemical Property- Characteristic of a substance that becomes known during a chemical reaction. Physical Property- Any property used to characterize matter and energy and their interactions.




 * __Physical Property:__** A physical property is a characteristic you can observe or measure with out changing the object's composition. All these crayons have a distinct physical property: color. They each have one obvious color and we can't change that without using chemicals, physical means, ect.


 * __Chemical Property:__** A chemical property is a substance's is chemical composition. Chateau Frontenac in Quebec, Canada has a roof that was once made from copper(Cu) in 1893. Erosion, weathering, and oxidation made the roof turn from a brownish red to a faded green color. Like a penny, its shape doesn't change but its chemical identity did from Cu to CuCO3.



====**__Physical Change:__** A physical change is when the shape, color, and/or physical characteristics change, but the chemical formula(identity) stays the same. An ice cube melting is an example of a physical change. Take note that changing phase is not a chemical change. This is because water, as a gas, liquid, or solid, is always going to be H2O.====
 * __Chemical Change:__** A chemical change is when the chemical composition of an object changes. Fireworks are a chemical change because chemical potential energy stored in the fireworks is transferred into heat, sound, kinetic and light energy when the fireworks explode. This could also be considered a physical change due to the changing of colors.