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Compounds and Mixtures

Compounds and Mixtures. Elements. A substance that is made up of only one type of atom. Iron Particles – An element. Key:. one iron particle. strong bonds between iron particles. iron particles held together by strong bonds. iron particles. iron particles are attracted to a magnet.

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Compounds and Mixtures

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  1. Compounds and Mixtures

  2. Elements A substance that is made up of only one type of atom

  3. Iron Particles – An element Key: one iron particle strong bonds between iron particles iron particlesheld together by strong bonds

  4. iron particles iron particles are attracted to a magnet iron particlesdiagram

  5. Sulphur particles - Molecule Key: one sulphur particle strong bonds between sulphur particles sulphur particles held together by strong bonds

  6. sulphur particles sulphur particles are not attracted to a magnet sulphur particlesdiagram

  7. iron particles sulphur particles

  8. A mixtureof iron and sulphur particles strong bonds between sulphur particles strong bonds betweeniron particles

  9. A mixtureof iron and sulphur particles A magnet attracts the iron particles but not the sulphur particles. The mixture is separated mixture diagram

  10. To form a compound we heat the mixture Heat

  11. A compound between iron and sulphur particles one sulphur particle one iron particle strong bonds between iron and sulphur particles

  12. A compound between iron and sulphur particles A chemical change means a new substance is made The magnet cannot separate iron and sulphur particles in a compound

  13. Mixtures and Compounds

  14. Salt Chlorine (Cl) Poisonous gas Sodium (Na) Explodes in water Sodium Chloride(NaCl) Table salt It’s own properties

  15. Mixture and Compounds Compound/ Element mixture Element Mixtures – Two or more elements mingled together Compounds- Two or more elements BONDED together. Element Element Mixture Mixture Compound Mixture

  16. Element Compound Mixture Which is it?

  17. Molecules Two or more atoms BONDED together

  18. Plastics Literally means easy to change shape. Water proof and easy to shape. Mostly made out of oil. The poly in their names means POLYMER.

  19. Properties of Plastics Easily Moulded and Coloured Does not rot or rust Not heavy for it’s strength Good Insulators of heat and electricity Non-biodegradable still here in 1000000 years Monomers small molecules that can be joined together Polymer is a large molecule made of a chain of smaller molecules

  20. Monomers small molecules that can be joined together. Polymer is a large molecule made of a chain of smaller molecules

  21. Physical Change Nothing new made Easy to reverse Example Melting Ice

  22. Chemical Change In this type of change a new substance is produced It is hard to reverse Example Burning of wood or this from the internet

  23. Make a table

  24. ..\..\Neil Work\reversible_p1_1.gif

  25. Conservation of Mass 43.43 g Original mass = 43.43 g Final mass reactants = product

  26. Conservation of Mass In a reaction no new mass is made

  27. Elements A substance that is made up of only one type of atom

  28. Summary Elements are…made up of one atom Compounds are made up of 2 or more elements bonded together (they have their own properties) A physical change is reversible and nothing new is made Plastics are made of long chains of monomers and are made of oil. Mass is conserved in all reactions

  29. H/W P 175 Q 1,2,5,7,8,9

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