Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.
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Transcript of Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.
![Page 1: Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.](https://reader031.fdocuments.net/reader031/viewer/2022032709/56649ed15503460f94bdff05/html5/thumbnails/1.jpg)
Which solids will dissolve?
Dayna Lee Martínez
STARS – USF
Maniscalco Elementary
![Page 2: Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.](https://reader031.fdocuments.net/reader031/viewer/2022032709/56649ed15503460f94bdff05/html5/thumbnails/2.jpg)
Review
• Mixture– A mixture is a combination of two or more
substances that are not chemically combined and that can be separated.
– Could you give me an example?
• Homogeneous vs. heterogeneous mixtures– Homogeneous mixtures are of uniform
appearance – Heterogeneous mixtures consists of visibly
different substances
![Page 3: Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.](https://reader031.fdocuments.net/reader031/viewer/2022032709/56649ed15503460f94bdff05/html5/thumbnails/3.jpg)
Solutions• Solution
– A solution is a group of molecules that are mixed up in a completely even distribution.
AlloysCarbonated
water
Chocolatemilk
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Solute and Solvent• Solute
– A solute is the substance to be dissolved.
• Solvent – A solvent is the substance doing the dissolving.
![Page 5: Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.](https://reader031.fdocuments.net/reader031/viewer/2022032709/56649ed15503460f94bdff05/html5/thumbnails/5.jpg)
Solubility• Solubility
– Ability of the solvent to dissolve the solute.
• Factors that affect solubility
Temperature PressureStructure ofthe substance
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Classification of solutions
• Saturated solutions – have the maximum amount of solute dissolved in them.
No more solute can be made to dissolve.
• Unsaturated solutions – have less than the maximum amount of solute dissolved
in them. This means that more solute could be added to the solution and the additional solute would still dissolve.
• Supersaturated solutions – have more than the maximum amount of solute dissolved
in them. Not all substances will form supersaturated solutions.
http://genchem.chem.wisc.edu/demonstrations/gen_chem_pages/11solutionspage/crystallization_from_super.htm
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Saturated
Unsaturated
Supersaturated
![Page 8: Which solids will dissolve? Dayna Lee Martínez STARS – USF Maniscalco Elementary.](https://reader031.fdocuments.net/reader031/viewer/2022032709/56649ed15503460f94bdff05/html5/thumbnails/8.jpg)
Suspensions• The particles in suspensions are larger than those
found in solutions. Components of a suspension can be evenly distributed by mechanical means, like by shaking the contents, but the components will settle out.
Chalk in water Dust in air
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Which solids will dissolve?
At the end of today’s experimentwe will be able to answer this question for the following solids: sand, sugar, salt and baking soda