Acids bases

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Acids bases

  1. 1. Acids, Basesand the pH scale
  2. 2. Vocab you need to knowSolution: A uniform mixture that contains a solvent and at least one solute. (Example: Sugar Water)  (hint- if you can see through it and it all looks the same it’s probably a solution)Solvent: the part of a solution that has the most quantity. In sugar water, this would be the waterSolute: the substance that is present in a solution in a smaller amount. In sugar water, this would be the sugar
  3. 3. More Vocab…Colloid: a mixture that contains small, undissolved particles that do not settle out. A colloid contains larger particles than a solution but they are still too small to see. EXAMPLE: Milk (fats, proteins, water) hint: if you cannot see through it and it all looks the same, it’s probably a colloid)
  4. 4. More…Suspensions: a mixture where particles can be easily seen and can be separated by settling or filtration. EXAMPLE: A snow globe (you can see through it, but you can also see specific particles that are part of the mixture.)
  5. 5. Saturated vs. UnsaturatedWhen you have added so much solute to a solution that no more can dissolve, then you have a saturated solution.When you can still add more solute and it continues to dissolve into the solution, then you have a unsaturated solution.
  6. 6. AcidsAn Acid is a chemical compound, that, when dissolved in water has a pH of less than 7.Acids taste sour, react with metals and carbonates and will turn blue litmus paper red.Acids are corrosive- they eat away at other materials.
  7. 7. BasesBases are chemical compounds that, when dissolved in water, have a pH of above 7.Bases taste bitter, feel slippery and turn red litmus paper blue.Bases are corrosive- they eat away materials.
  8. 8. Uses for Acids:Acids are naturally in many of the foods we eat :Tomatoes, lemons, oranges, and even leafy green veggies!Acids are also used in many fertilizers.Acids can also be found in batteries
  9. 9. Uses for BasesCement is made using basesMany cleaning solutions used in the home are bases (drain cleaner, glass cleaner, bleach, soap)Bases can also be found in baked goods such as breads, cakes, and cookies!
  10. 10. The pH scale!!!!The pH scale is a range of values from 0-14 that express the concentration of hydrogen ions in a solution. The more hydrogen ions, the lower the number on the pH scale.
  11. 11. Acids & Bases on the pH scaleAcids range from 0-6.9Acids have the most amount of hydrogen ions.Bases range from 7.1-14Bases have the least amount of hydrogen ions.7 on the scale is neutral (neither)
  12. 12. Neutralizing Acids & BasesThe reaction between acids and bases is a called neutralization.The neutralization of acids and bases depends on the identities, volumes and concentrations of the reactants. Salts will typically form as a result of acids and bases neutralizing.

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