CHEMISTRY

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Homework: Mixtures What is a Mixture? A mixture is when two or more different substances are mixed together but not combined chemically. Mixtures can usually be separated in homogeneous or heterogeneous.

What is a Liquid? The liquid is one of three states of aggregation of matter. A liquid is a fluid whose volume is constant conditions of temperature and pressure. Liquid Mixture: Example: if you swirl sand in water, it is a liquid, even though the mixture is not uniform on the molecular scale. As noted above, vinegar is a solution of acetic acid (a liquid when pure) in water

What is Solid? A solid is one of the three states of aggregation of matter characterized by resistance to change of shape and volume. Solid Mixture: Example: solid mixtures can be combine of any the salts like kcl (K=Potassium)(Cl=Clorine) and Nacl (Na=Sodium)(Cl=Clorine).

Gas Mixture: Example: The air is also a mixture gases: nitrogen, oxygen, carbon dioxide, etc.

Marcelo Acosta Zárate

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Homework: Is a partial or complete solid solution of one or more elements in a metallic matrix. ** The importance of Alloy was: ** Alloys are essential to not only construction, but transportation, and the world economy. They can blend the properties of two or more metals to create a hybrid metal that is more cost effective, stronger, more durable, and overall better suited to it's intended purpose than the pure metals used to create the compound. Plastic is a synthetic macromolecular structure, as it is constituted by a large amount molecules of hydrocarbons, alcohols and other organic compounds,the plastic is a substance given quantity of organic carbon among its many molecules. -All studies show that it takes less energy to make a product from plastics than just about any other material.
 * What is Alloy? **
 * Same of alloys are: ** aluminium, gold, mercury, silver, etc.
 * What is Plastic? **
 * The importance of Plastic was: **
 * - ** The superior properties of plastics such as hygienic (clean or free from disease causing microorganisms) barrier properties, light weight, and durability contribute significantly to our health and quality of life.

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