Key concepts Chemistry Solutions Miscibility Polarity Solubility Introduction You probably know some liquids, such as oil and water, do not mix together. Materials Four transparent mini cups two ounces with lids Permanent marker Tap water Rubbing alcohol 70 percent isopropyl alcohol Table salt Set of measuring spoons Work area that can tolerate spills Ethanol or acetone can be found in hardware stores optional Salt substitute such as potassium chloride or Epsom salt optional Preparation With the permanent marker label the mini cups 1, 2, 3 and 4.
Add one and a half tablespoons of water to cups 1 and 3. Add one and a half tablespoons of rubbing alcohol to cups 2 and 4. Procedure Add one teaspoon of salt to the water in cup 1. What happens to the salt? Does it dissolve in the water? Put on the lid and shake the cup for about 20 to 30 seconds. What does the mixture look like? Repeat the previous two steps using cup 2 with rubbing alcohol. What happens to the salt this time? Does the mixture look different from the water—salt mixture? Take the cap off the permanent marker and swirl its tip in the water in cup 3 for about 10 seconds.
Put the lid on the cup and shake it for five seconds. Does the ink dissolve in the water? What does the solution look like after shaking? Repeat the previous step with cup 4 rubbing alcohol. Does the resulting mixture look different? If so, what is different? Can you explain the differences? Next, pour the alcohol from cup 4 into the water in cup 3.
Put the lid back on and swirl the mixture for five seconds. Does the rubbing alcohol mix with the water? What happens to the color of the mixture? Gordon , C. Reimer , and B. Parks, Clare S. The Journal of Physical Chemistry , 31 3 , Parks, K. The Journal of Physical Chemistry , 29 6 , Design of particle size distribution for custom dissolution profiles by solving the inverse problem.
Powder Technology , , Physical and chemical effects of isopropanol exchange in cement-based materials. Cement and Concrete Research , , On the impingement of free, thin sheets of liquids—A photographic study of the impingement zone. AIP Advances , 11 1 , Journal of Molecular Liquids , , Drug Development and Industrial Pharmacy , 46 6 , Solubility of ketoconazole in the binary mixtures of 2-propanol and water at different temperatures.
Bioactive injectable triple acting thermosensitive hydrogel enriched with nano-hydroxyapatite for bone regeneration: in-vitro characterization, Saos-2 cell line cell viability and osteogenic markers evaluation. Drug Development and Industrial Pharmacy , 45 5 , Schramm , Thomas S.
Journal of Cystic Fibrosis , 18 2 , It is a pure substance. Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid, slightly more viscous than water. Hydrogen peroxide is the simplest peroxide a compound with an oxygen—oxygen single bond.
Apple juice is actually a mixture of water particles, sugar particles, flavour particles, and vitamin particles. Apple juice may look like one kind of matter, but it contains many kinds of particles all mixed together.
Mouthwash, also called oral rinse, is a liquid product used to rinse your teeth, gums, and mouth. It usually contains an antiseptic to kill harmful bacteria that can live between your teeth and on your tongue. The solution known as rubbing alcohol emerged around the same period. Since its initial patent, rubbing alcohol has been utilized for a variety of different tasks. Warning: It is important to note, rubbing alcohol should always be used with caution. The solution should not be ingested under any circumstance, as it is not made for consumption.
Rubbing alcohol is not a topical remedy for fever. The effect of it being absorbed through the skin is too dangerous. If you notice any allergic reactions after use, it is important to call Rubbing alcohol is essential for any household first-aid kit.
You can purchase it at your local pharmacy, grocery store, or even online. Who knows, you may even have some hiding in your medicine cabinet. Here are a couple of suggestions to get you started. Equate brand rubbing alcohol can be found in any store or pharmacy.
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