Acids and Bases List as many things that you can about acids or - PowerPoint PPT Presentation

Acids and Bases • List as many things that you can about acids or bases in 15 seconds. • Share with table mates.

List brainstorm Make foldable 

Science Definitions • Acids: – Link to vid – Hydronium • Bases: • pH: • pH scale

Characteristics Acids Bases Taste--- Taste--- Metals--- Metals--- Tissues--- Tissues--- pH values-- pH values--

Acids • All acid formulas start with hydrogen • Look for the pattern on the next slide

Patterns? • HCl • Hydrochloric acid • H 2 SO 4 • Sulfuric acid • HNO 3 • Nitric acid • HF • Hydrofluoric acid • H 3 PO 4 • Phosphoric acid

Rules for Naming Acids

Vague terms Give an example of when you thought some solution was weak or strong.

Concentration • Concentrated: • Diluted: • Percent: • Parts per. . .

Concentration 2 Fifteen grams of sugar is dissolved in enough water to make 200 mL of solution. What is the percentage of this solution?

Concentration 3 Twenty-five milliliters of a 5% solution is allowed to evaporate to retrieve the solute. How many grams of solute should be left?

Concentration 4 The concentration of SO 2 in air is measured to be 20 ppm. If a room has 1000 m 3 of air in it, how many m 3 are SO 2 ?

Concentration 5 The level of a contaminant is regulated at 50 parts per billion (ppb). What is this in ppm?

Dilution Equation Concentrated = Diluted (Vol)(Conc) = (Vol)(Conc) One hundred milliliters of a 1500 ppm solution is allowed to evaporate until the volume is 85 mL. What is the new concentration?

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