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

Taste--- Metals--- Tissues--- pH values--

Bases

Taste--- Metals--- Tissues--- pH values--

Acids

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

Patterns?

• HCl
• H2SO4
• HNO3
• HF
• H3PO4
• Hydrochloric acid
• Sulfuric acid
• Nitric acid
• Hydrofluoric acid
• 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 SO2 in air is measured to be 20 ppm. If a room has 1000 m3 of air in it, how many m3 are SO2?

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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