Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom...
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Transcript of Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom...
![Page 1: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/1.jpg)
Elements, Compounds, &
Mixtures
![Page 2: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/2.jpg)
ELEMENTS
![Page 3: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/3.jpg)
• A pure form of matter
• consists of only one type of atom
• 118 elements known to man (March 2010) 94 = naturally occurring
24 = man-made / synthetic
• Listed on periodic table
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![Page 5: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/5.jpg)
Examples
Iron Copper
![Page 6: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/6.jpg)
Silver
![Page 7: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/7.jpg)
Gold
![Page 8: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/8.jpg)
Hydrogen
![Page 9: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/9.jpg)
Oxygen
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Periodic Table
• tabular display of elements
• Grouped by similar characteristics or properties:
groups/families (18) = columns
periods (7) = rows
• 3 groups: metals, non metals, metalloids
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![Page 12: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/12.jpg)
Metals• good conductors of heat & electricity
• solid at room temperature
• lustrous (shiny) & malleable (can be shaped)
• High densities, and melting & boiling points
![Page 13: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/13.jpg)
Nonmetals• Poor conductors of heat & electricity
• in solid form, they are dull and brittle
• significantly lower densities, and melting & boiling points when compared to metals
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Metalloids
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• Display qualities of both metals & nonmetals
• Includes boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po)
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Compounds
Water / H2O
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• Two or more different elements combined, with the atoms held together by chemical bonds
• Formed or broken down during chemical reactions (chemical change)
• Cannot be separated by physical means
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Sodium Chloride (NaCl)
Common Table Salt
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Water (H2O)
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Ammonia (NH3)
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ethanol alcohol (C2H5OH)
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Mixtures
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• Two or more elements or compounds that are blended together without combining chemically so that each ingredient substance retains its own chemical properties and makeup
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• can be separated by physical means
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Classifications of Mixtures
• Uniformity1. heterogeneous2. homogeneous
• Composition1. mixture of elements
2. mixture of compounds 3. mixture of elements & compounds
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Uniformity
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Heterogeneous Mixture
combination of
substances in
which each
substance can
easily be
identified
(hetero = different)
![Page 28: Elements, Compounds, & Mixtures. ELEMENTS A pure form of matter consists of only one type of atom 118 elements known to man (March 2010) 94 = naturally.](https://reader030.fdocuments.in/reader030/viewer/2022032804/56649e565503460f94b4dcab/html5/thumbnails/28.jpg)
Homogeneous Mixture
• combination of substances spread uniformly (homo = same) throughout
• substances, therefore, are not easily identified
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Homogeneous Mixture
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Composition
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Mixture of Elements
• Substance composed of two or more different elements with atoms that are physically mixed together
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Mixture of Compounds
• Substance composed of two or more different compounds physically mixed together
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Salt Water
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Mixture of Elements &
Compounds
• Substance composed of at least one element AND at least one compound physically mixed together
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