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  1. 1. Everything is made of atoms One molecule is the smallestSubstances are made of atoms particle in a substance.There are 113 types of atoms If you destroy the particle you dontAtoms join together in groups called have the substance any more.moleculesAtoms: C, O, H, N, Ca, Na, K, Cl... Different types of molecules PURE SUBSTANCES MIXTURES OF SUBSTANCESOnly one type of molecule, only With several kinds of molecules orone type of particle. particles. You can separate each type of particles easily. You can join them again and the initial mixture will appear. (chomatography of ink...) ELEMENTS COMPOUNDS HOMOGENEOUS HETEROGENEOUSNo way you can With chemical MIXTURES OR MIXTURESseparate it. experiments you DISOLUTIONS DifferentBecause there is can separate a Molecules of two components canonly one TYPE of compound into or more types be seen to theatoms, you can several are mixed up. naked eye or withnot turn it into substances. This microscopes.several proves there aresubstances. several types of Examples: atoms in the blood: red cells+ particle. white cells+ plasma; oil and water; sand and sugar. You can not Ozone O3 distinguish the Elaine - Lesson 1 pag1
  2. 2. But if you destroy different parts. the particle you dont have the initial substance, you have other substances -electrolysis of water-Task 1: Pure substance or mixture of substances? Element or compound? Explain your decision Elaine - Lesson 1 pag2
  3. 3. Task 2Here are two different atoms:Use them to draw a: a)Compound b)MixtureTask 3 Identify: compound, mixture and element 1) 2) 3) 4) 5) 6) 7) Drawing/s number is/are elements because... Drawing/s number is/are compounds because... Drawing/s number is/are mixtures because... Draw how you think particles in the air are organised. Represent particles with dotsTask 4 Put the following information in the correct place in the facts file.Can be chemical compounds or elements/ only one component / a subgroup of mixtures/ made up of asolvent and a solute/ cannot be broken down/ often but not always liquid / homogeneous ones are calledsolutions/ have a fixed composition / contain two or more elements/ classified in the Periodic Table / madeup of more than one substance / unique differentiating properties/ about ninety are found in nature / madeup of more than one substance / can be homogeneous or heterogeneous Elaine - Lesson 1 pag3
  4. 4. FACTS FILE: MATTERPure substancesCompoundsElementsMixturesSolutionsTask 5Explain how you would separate the following mixtures:1. Salt from sea water2.- The different colour inks in black ink.2.Alcohol from water (hint: alcohol has a boiling point of 58ºC)Task 6You work for a mining company that mines a mixture of iron filings, large lumps of tin, sand and salt.Design a machine that could separate this mixture.Task 7. Classify: milk, fresh water, sea water, distilled water, orange juice, cell, meatElements:Compounds:Mixtures: Elaine - Lesson 1 pag4
  5. 5. Teachers keyElaine - Lesson 1 pag5
  6. 6. Elaine - Lesson 1 pag6