ࡱ> GIFa bjbjrr 46L\L\ FFFFFZZZZ$~tZh(SUUUUUU$< "yFyFFqqqFFSqSqqh?0,#e##FHqyyk#> : The Nuts and Bolts Activity: A Study of the Classification of Matter You should be familiar with the following terms. You may wish to write definitions as you work through the activity. 1. Homogeneous: 2. Heterogeneous: 3. Atom: 4. Molecule: 5. Element: 6. Compound: 7. Mixture: 8. Pure Substance: Part 1 In this activity, we will pretend that nuts, washers and bolts are 3 kinds of elements. A single washer represents an atom of WASHER. A single nut represents an atom of NUT and a single bolt represents an atom of BOLT. Atoms can be put together to form compounds. A molecule is formed when two or more  HYPERLINK "http://education.jlab.org/qa/atom.html" atoms join together chemically. A compound is a molecule that contains at least two different  HYPERLINK "http://education.jlab.org/qa/element.html" elements. Name of elementSymbol of elementPicture of 1 atom of the elementLong metal screwLmsShort metal screwSmsLock washer screwLwsSquare nutSnHex nutHnwasherW Create three different molecules using your elements. Name each molecule and write the chemical formula for each molecule using the chemical symbols of the elements from the previous table. Name of moleculeChemical formula of moleculeIs the molecule and element or compound?123 Using elements, compounds or both, create a homogeneous mixture and a heterogeneous mixture and explain your reasoning for each. Air that you breathe is a mixture of gases, by volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% Ar or argon, 0.039%CO2 or carbon dioxide, and variable amount ofwater vapor, on average around 0.4% over the entire atmosphere. Identify the elements and compounds that compose air. Explain this statement All compounds are molecules but not all molecules are compounds. Part 2 Separating a Mixture Obtain a vial from your instructor. DO NOT OPEN THE VIAL Each vial contains a mixture of sand, salt, bits of staples, and Styrofoam pieces. Describe the appearance of the mixture. What kind of mixture is this, homogeneous or heterogeneous? Explain your reasoning. Develop a method for separating the parts of the mixture recovering as much of each component as possible. You may wish to write a series of steps. The average person generates 4.3 pounds ofwasteper day. Considering the amount of garbage produce by humans, escribe why mixture separation is necessary for society. 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