Lesson 3 solution
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This document discusses solutions and mixtures. It defines key terms like solute, solvent, saturated, unsaturated and supersaturated solutions. Examples are given of different types of solutions including liquid, solid, and gaseous solutions. Factors that affect solubility like temperature, particle size, shaking and polarity are explained. The document also discusses concentration of solutions in terms of dilute, concentrated, saturated and unsaturated levels.
Lesson 3 solution
- 2. Mixtures • It is a mix of 2 or more substances Sand &Water Salt & water Salad
- 3. Solution Is a mixture with parts that blend so that it looks the same everywhere sugar dissolving in water
- 4. Solution solute solvent The smaller amount that is dissolved in a solution The larger amount that dissolves a substance in a solution
- 5. Example Sugar water solute solvent sugar water Note : water is a universal solvent
- 6. Example Cigarette smoke in air solute solvent Cigarette smoke air
- 7. Example Soda drink - carbon dioxide (bubbles) and sugar water solute solvent Carbon dioxide Sugar water
- 8. Example Gold ring – copper and gold solute solvent copper gold
- 10. Example Nichrome wire – 80% nickel and 20% chromium solute solvent chromium nickel
- 11. Example Bronze – 88% copper and 12% tin solute solvent tin copper
- 12. Solute Solvent Activity : Index card
- 13. Given the solution samples below. Write on the table which is solute and solvent. 1. Brass – 70% copper and 30% zinc 2. Sugar water – sugar and water 3. Hot chocolate – milk and chocolate 4. Sea water – water and salt 5. Nichrome – 20% chromium and 80% nickel
- 14. Solution may be classified as: Solid (such as alloy and dental amalgam) Liquid (such as salt water and alcohol) Gaseous (such as LPG and air)
- 15. Liquid Solution
- 16. Gaseous Solution
- 17. Solid Solution A mixture of metals, known as alloys Alloys are preferred over pure metals because: 1.They resist corrosion 2.They have higher melting points 3.They are stronger than pure metals
- 19. Types of Solution Lesson 4 Solution unsaturated supersaturated saturated Dilute Concentrated
- 20. Concentration • the amount of solute dissolved in a solvent at a given temperature
- 21. Concentration • the amount of solute dissolved in a solvent at a given temperature Dilute concentrated
- 22. Concentration • the amount of solute dissolved in a solvent at a given temperature •described as dilute if it has a low concentration of solute dissolved •described as concentrated if it has a high concentration of solute dissolved
- 24. Concentration •Unsaturated - has a less than the maximum concentration of solute dissolved •Saturated - has the maximum concentration of solute dissolved (can see solid in bottom of solution) •Supersaturated -contains more dissolved solute than normally possible (usually requires an increase in temperature followed by cooling)
- 25. Solubility •the amount of solute that dissolves in a certain amount of a solvent at a given temperature and pressure to produce a saturated solution
- 26. Factors affecting solubility of solids Temperaturee increased temperature causes solids to dissolve faster Shaking Note: Increasing the amount of solute DOES NOT increase the rate of dissolving Shaking (agitation) causes solids to dissolve faster Smaller particles dissolve Faster because they have more surface area Particle Sizee
- 27. • Miscible liquids can easily dissolve in one another. • Immiscible liquids are not soluble in each other.
- 28. Polarity and Dissolving • Chemists use the saying “like dissolves like”: Polar solutes tend to dissolve in polar solvents. Nonpolar solutes tend to dissolve in nonpolar solvents. Oil is nonpolar while water is polar. They are immiscible.
- 29. Remember… Safety First! (Enter your own creative tag line above)