Mallory+Johnson


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

A chemical change is change of one substance in a material to a different substance. 

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Cooking an egg is a chemical change. you can cook an egg by boiling it or frying it. Bonds connect one protein to another. If you leave the eggs at a high temperature too long, too many bonds form and the egg white becomes rubbery. this is hard boiling an egg.=====

A physical change is a change in size, shape, color, or state of matter.
An example of a physical change is a basketball.A basketball can deflate because the air's tendency becomes more dense when it is cold. This happens because air molecules,when cold, move slowly and close together while air molecules,when warm, move fast and farther apart. The basketball deflates from this, making it s physical change.



Physical Property is used to characterize materials in actions and their interactions.
Milk is a physical property because milk can turn rotten or spoiled. The milk changes taste,color,and texture over time. The milk does this by itself, and/or temperature condition it is in.If milk is set out in the sun, it will bubble and turn rotten in a few hours. Milk expires after time, and becomes old and gross. It can be sickly to a human if drunk after expiration date.



Chemical Property is used to characterize materials in actions that change their identity.
A newspaper is a chemical property because the sensitivity of the light causes the newspaper to turn yellow after and amount of time. The light changes the color of the newspaper, changing its identity.This is also known as chemical property. The acids in the newspaper are afffected by the sun. This causes the newspaper to fade and change it's color.

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