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Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
Reactions in aqeous solutions
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Reactions in aqeous solutions

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Grade 10 Physical Sciences …

Grade 10 Physical Sciences

Based on Andries Oliviers' CAPS aligned textbook

Focus area: Reactions in aqueous solutions

Published in: Education
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Transcript

  • 1. Reactions inaqeous solutions
  • 2. Water
  • 3. Water is polar + - δ δ
  • 4. Forms adipole
  • 5. Water is an excellentsolvent
  • 6. Compounds that contain polar molecules Ionic solids
  • 7. Polar molecules ionisation: + - HCl(g) → H (aq) + Cl (aq) δ+ δ-
  • 8. Ionic solids dissociation: + - NaCl(g) → Na (aq) + Cl (aq)
  • 9. Solutions that conductelectricity are known aselectrolytes
  • 10. Strong Weak Non- electrolytes
  • 11. Strong Weak Non- High Low No [ions] [ions] [ions] Do notConduct Conduct Conduct well poorly
  • 12. Conductivity depends on: Type of substance Solubility of substanceConcentration of the ions in solution
  • 13. Types of chemical reactions
  • 14. Ion exchange reactions
  • 15. Includes:Precipitation reactionsGas forming reactionsAcid-base reactions
  • 16. Precipitationreactions
  • 17. Precipitate forms when there is acombination of ions that can form a salt that is insoluble in water.
  • 18. Solubility rules
  • 19. Balanced chemical equations for precipitate reactions Formulae Chemical of equation Word Balance reactants forequation & precipitate products
  • 20. Testing for certain ions
  • 21. Testing forhalides
  • 22. - - -Cl , Br , I
  • 23. AgNO3 (aq) and shake -Cl White precipitate Nitric acid Nothing happens: chloride
  • 24. AgNO3 (aq) and shake -Br Cream coloured precipitate Nitric acid Nothing happenes bromide
  • 25. AgNO3 (aq) and shake-I Yellow precipitate Nitric acid Nothing happens iodide
  • 26. Testing forSulphates
  • 27. BaNO3 (aq) White precipitate Nitric acidNothing happens: sulphate
  • 28. Testing forcarbonates
  • 29. BaNO3 (aq) White precipitate Nitric acidPrecipitate disappears: carbonate
  • 30. Gasformingreaction
  • 31. When ions exchange, and a gas is part of the product. Acid and carbonate → CO2 Acid and metal → H2
  • 32. Acid-base reaction
  • 33. Acid-baseneutralisation
  • 34. Acid and metal oxide
  • 35. Acid and a metal carbonate
  • 36. Acid and a metal
  • 37. Redox reactions
  • 38. Reduction/oxidation reaction
  • 39. Loss of electrons - oxidation
  • 40. Gain of electrons - reduction
  • 41. Metal displacementHydrogen displacementHalogen displacement
  • 42. Tosummarise
  • 43. When substances mix with water,they can dissolve.
  • 44. When these solutions conductelectricity, they are called electrolytes.
  • 45. Ion exchangereactions: Cations and anions in solutions swop around.
  • 46. Precipitation reactions:One of the products are insoluble.
  • 47. Gas forming reactions:One of the products is a gas.
  • 48. Acid-base reactions:Acids react to metal- ormetal-based substances to form H2

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