Courtney+Deutsch


 * **Assignment 3: Element Advertisement**

chlorine
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 · Chlorine’s chemical symbol is Cl. Its atomic number is 17. Its period number is 3. Chlorine is located in the halogens, group 8.  · Halogens have 7 electrons in their outermost energy level, and when

1 more electron is added they form salt.  · If you need to disinfect your pool, or whiten your floors, Chlorine is the element for you! · Although Chlorine is abundant in nature and necessary to most forms of life, it is a dangerous, toxic gas.  · Chlorine is heavier than air, and usually sinks to the bottom in poorly ventilated rooms. · Large amounts of this dense, green gas can be fatal, so be careful. · Also, Chlorine is a strong oxidizer, and might react with flammable materials.


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 * **ASSIGNMENT 2: Classification of Matter Flowchart**
 * **ASSIGNMENT 1: Physical and Chemical Properties and Changes**

The color of this t-shirt is a physical property.

When the t-shirt is bleached white a physical change occurs. The t-shirt is still made of the same material, but just a different color.

The famability of an object, such as a toy, is a chemical property. Famability is how easily an object will burn or ignite, causing fire or combustion. Flammibility is a chemical property because when you burn something there is a chemical reaction occuring, resulting in a checmical change. The rusting of metal is a chemical change. Overtime because of weather and other things, metal reacts with the water in the air and forms rust.