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IPS Chapter 4 Pg 69 Solutions. Solvent – does the dissolving ex: water, alcohol, peroxide, Shout Solute – substance that is dissolved Unsaturated – solvent not full of solute yet Saturated – full of solute - PowerPoint PPT Presentation
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IPS Chapter 4 Pg 69Solutions
• Solvent – does the dissolvingex: water, alcohol, peroxide, Shout
• Solute – substance that is dissolved• Unsaturated – solvent not full of
solute yet• Saturated – full of solute• Supersaturated – so full it will start to
crystallize (precipitate), can’t hold any more, rock candy
• Concentration – grams of solute in the volume of solvent
given in g / 100 cm3
(multiply grams in 1 mL by 100)
• Pg 69 middle and bottom
• Pg 70 #2-4
• Solutions are homogeneous (completely blended)
• Solubility – how much solute will dissolve in given volume of solvent, characteristic property
Solubility affected by….
1. Temp – solids dissolve better in
hot solvent, graph Pg 73
- gases dissolve better in cool
hot water=less oxygen for fish Pg 82
2. Pressure – carbon dioxide in soda
3. Stirring - agitation
4. Surface area - handout
• Graph handout w/ quiz sheet• Pg 72 #7-11• Pg 75 #13-16, 18-21• Pg 77 ethanol• Pg 78 #22• Pg 79 carbon dioxide• Pg 82 #26-30
Solutions can be….• Solids – alloys
iron + carbon = steel
zinc + copper = brass
tin + copper = bronze
gold + copper = 12 K gold
• Liquids – carbon dioxide in soda
• Gas – air we breathe is mostly nitrogen
Acid RainPg 83
• Carbon dioxide in air makes carbonic acid rain, weak acid ( in soda) but able to dissolve limestone underground and cause sinkholes
• Burning coal and making paper produces sulfur that causes sulfuric acid, strong acid (battery acid), dissolves statues and buildings, harms fish and crops
Solutes in Drinking WaterPg 85
• Hard water – excess calcium (lime deposits)
• Pg 86 #31,32,35,36,37,39,40,42
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