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Physical and Chemical Properties

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Jessica Hollister

on 5 March 2013

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Transcript of Physical and Chemical Properties

Physical and Chemical Changes Julia Ammons, Jessica Hollister
and
McKayla Kertscher Physical Properties Physical properties can be observed or measured without changing the identity of matter. Color, odor, mass, volume and density. Specific examples: thermal conductivity, malleability, state, ductility and solubility. Unpainted Chair An example of physical change is a chair. If you paint an unpainted chair, it will change it's color, taste, odor, mass, volume and density. Chemical Properties Some examples of chemical change are: flammability, non-flammability, reactivity with oxygen, reactivity with acid and reactivity with water. Physical Change Chemical Change Copyright wardroomgallery.blogspot.com Painted Chair Chemical properties describe how a substance can change into a new substance with different properties. They can be observed with your senses but aren't as easy to notice as physical properties. We use physical properties in everyday life. A change that effects one or more physical properties of a substance. Physical changes do not change the identity of a substance so they are often easy to undo. Physical changes do not form new substances. Examples: melting, painting, dissolving, freezing, cutting, crushing and bending. www.youtube.com The apple's physical properties are its color (red), its odor (fruity) and its state (solid). www.earthtimes.org When the ice melts, the water reacts with the calcium carbide (place on the bottom) to produce acetylene gas and calcium hydroxide. The acetylene gas then explodes into flames when a match is placed on top. Chemical changes occur when one or more substances are changed into entirely new substances with different properties. A chemical property describes a substance's ability to go through a chemical change. A chemical change is the actual process in which the substance changes into another substance. Some chemical changes are effervescent tablets bubbling in water and the Statue Of Liberty's copper turning green after its interaction with carbon dioxide and water. Chemical changes cannot be undone because new substances are formed. Examples of chemical changes are: color change, fizzing or foaming, heat, production of sound, light and odor. Vinegar and baking soda react to form sodium acetate in solution, carbon dioxide gas, and water. The "fizz" that is seen is the production of carbon dioxide gas. http://wiki.answers.com/Q/Chemical_reaction_vinegar_and_baking_soda www.amazon.com
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