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  • Slide 1
  • 2.2The Classification of Matter
  • Slide 2
  • Materials Elements Compounds Mixtures 2.2The Classification of Matter
  • Slide 3
  • Material Substance Mixture Materials 2.2The Classification of Matter
  • Slide 4
  • MaterialOperational DefinitionConceptual Definition substance - all samples have the same proportions of components - a material with only one set of properties - a material with atoms that are chemically combined in a fixed ratio - a material which in the solid phase has only one pattern and/or grouping of atoms throughout mixture - a material with components that retain their own individual identities and can thus be separated - the same components may be mixed in different proportions a material composed of more than one substance text page 74 2.2The Classification of Matter Materials
  • Slide 5
  • Material Substance Mixture Element Compound Materials 2.2The Classification of Matter
  • Slide 6
  • MaterialOperational DefinitionConceptual Definition element a substance that cannot be decomposed a substance composed of only one type of atom compound a substance that can be decomposed a substance composed of more than one type of atom text page 74 2.2The Classification of Matter Materials
  • Slide 7
  • Material Substance Mixture Element Compound 2.2The Classification of Matter Elements
  • Slide 8
  • Element Metal Metalloid Non-metal 2.2The Classification of Matter Elements
  • Slide 9
  • NON-METALS 1H1H 2 He 5B5B 6C6C 7N7N 8O8O 9F9F 10 Ne 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn METALS METALLOIDS 2.2The Classification of Matter Elements
  • Slide 10
  • Metals Good conductors of heat & electricity Malleable (can be pounded into thin sheets) Ductile (can be drawn into wires) Lustrous Non-Metals Poor conductors of heat & electricity Many are gases at room temperature In the solid phase their crystals are brittle Metalloids Some metallic properties (although weakly) (Semi-metals) Some non-metallic properties 2.2The Classification of Matter Elements text pages 75-76
  • Slide 11
  • Material Substance Mixture Element Compound 2.2The Classification of Matter Compounds
  • Slide 12
  • Compound Organic Inorganic 2.2The Classification of Matter Compounds
  • Slide 13
  • Organic Contain both carbon and hydrogen atoms. May contain other types of atoms as well Inorganic Do not contain both carbon and hydrogen atoms. text page 76 2.2The Classification of Matter Compounds
  • Slide 14
  • Compounds may be further classified as molecular or ionic, binary or non-binary, and by their family. Molecular A molecule is a neutral group of covalently bonded atoms. Compounds consisting of molecules are called molecular compounds. Ionic An ion is a charged atom or group of atoms. Ionic compounds consist of positively and negatively charged ions held together by their opposite electric charges. text pages 76-77 2.2The Classification of Matter Compounds
  • Slide 15
  • Binary A binary compound is composed of only two elements. Non-binary A non-binary compound is composed of more than two elements. text page 76 2.2The Classification of Matter Compounds Compounds may be further classified as molecular or ionic, binary or non-binary, and by their family.
  • Slide 16
  • There are many families of inorganic and organic compounds including acids, bases, and salts. Other families of organic compounds such as aldehydes, esters, ethers, carbohydrates, etc. will be covered in chapter 8. 2.2The Classification of Matter Compounds Compounds may be further classified as molecular or ionic, binary or non-binary, and by their family.
  • Slide 17
  • text page 78 Acid Appears to be a compound having one or more H + ions bonded to an anion. In reality, acids are a special type of molecule that can be induced to form these ions. Base The most common type of base is a hydroxide. Salt Any ionic compound other than a hydroxide 2.2The Classification of Matter Compounds Compounds may be further classified as molecular or ionic, binary or non-binary, and by their family.
  • Slide 18
  • Material Substance Mixture Element Compound 2.2The Classification of Matter Mixtures
  • Slide 19
  • Mixture Homogeneous Heterogeneous Mixtures 2.2The Classification of Matter
  • Slide 20
  • MaterialOperational DefinitionConceptual Definition Homogeneous mixture a mixture that appears the same throughout the individual particles are smaller than 1 m Heterogeneous mixture a mixture that doesnt appear the same throughout At least some particles are larger than 1 m text page 78 2.2The Classification of Matter Mixtures
  • Slide 21
  • Mixture Homogeneous Heterogeneous Solution Colloid Mixtures 2.2The Classification of Matter
  • Slide 22
  • MaterialOperational DefinitionConceptual Definition Solution does not exhibit the Tyndall Effect and cannot be separated by centrifugation All particles are smaller than 1 nm. Colloid does exhibit the Tyndall Effect and can be separated by centrifugation Particles comprising the medium are smaller than 1 nm but the dispersed particles are between 1 nm and 1 m in size. text pages 79-81 2.2The Classification of Matter Mixtures