Exploring Pure Substances & MixturesCh. 11 Lesson 1Mr. BreedenMixtures vs Pure SubstancesA Mixture is two or more substances that are together in the same place, but not chemically bonded.

A Pure Substance is a single kind of matter that has a specific make upMixtureChocolate Milk- milk, chocolate, sugar, etc. Pure SubstanceWater- H2O

Pure SubstancesPure Substances cant be separated easily (sometimes they cant be separated at allExample- H2O, you cant separate the hydrogen from the oxygen very easily because theyre chemically bonded

Anything that is chemically bonded completely will be considered a pure substance C169 723H270 464N45 688O52 243S912 is considered a Pure substanceMixturesMixtures are two or more substances that are together, but not chemically bondedExample- NaCL+H2O, Saltwater, can be separated many waysSalt and Water are both pure substances, but when mixed together theyre considered a mixturePure Substances & MixturesPure Substances are rarely found in nature. Most of the time theyre mixed with somethingEven though Gold is an element (Au), it is found as Gold ore in nature

Practice- Pure Substance or Mixture?Hydrochloric acid- H20 + Cl2Ammonia- NH3Bleach- NaOClAmmonium Chloride- NH3 + HClHeterogeneous- you can see the different parts

Homogeneous- so evenly mixed that you cant see the different parts

Separating MixturesCompounds (pure substances), like H2O, are very difficult to separate into elements

Mixtures are usually very easy to separate. Like Saltwater. We can easily separate the salt (NaCl) from the water (H2O)PhysicallyMagnetismFiltration

DistillingExtractionEvaporation

AssignmentVocabulary for Chapter 11 Lessons 1 & 2Pg. 390 My Planet DiaryFigure 1Assess Your Understanding a & bFigure 3 & 4