You may want to use a new beaker for this experiment so the products and/or water don’t mix.…
Be careful to mix the chemicals in the amounts called for in the procedure. Adding too…
1Water has many unique chemical and physical properties. Water goes through various reactions and possesses unusual properties to sustain life on Earth. Water has the ability to dissolve a wide variety of substances. Therefore, in nature, water has a variety of dissolved substances such as different elements, salts, gases. Any solution in which water is solvent is called aqueous solutions.…
In aqueous solutions (solutions where water is the solvent), solutes are generally divided into two categories:…
Any chemical can be dangerous if it is misused. Always follow the instructions for the experiment. Pay close attention to the safety notes. Do not do anything differently unless told to…
2.Carefully read the labels of all chemicals before use. Abide by specific warnings and directions.…
Water is polar, has an unequal distribution of charge. This means that water molecules are slightly positive and negative. This quality is important because that makes water a good solvent. Other polar compounds and ions can easily be dissolved in water because polar + polar = even distribution of charge, and ions have a charge, so it's attracted to the opposite charge on the water molecule.…
Solubility consists of a solute and a solvent. Elements that dissolve are “soluble” and elements that don’t dissolve are “insoluble”. If the components are two liquids, the terms “soluble” and “insoluble” are replaced with “miscible” and “immiscible”. The main guidelines in determining solubility are: 1. All hydrocarbons are nonpolar, 2. compounds containing the electronegative elements oxygen and nitrogen are polar, 3. halogens do not alter polarity, 4. adding carbons to a chain decreased polarity, 5. dipole-dipole interactions is the force of attraction between polar molecules (H-H bonds being the strongest), and 6. branching of compounds results in a greater solubility in water than the corresponding straight chain compound.…
H2O |Litmus Test |Dilute HCl |Dilute NaOH | |Mg |Silver |None |No Change |Floated/ not soluble |slight bubbles |Basic | Got hot and fizzy |No Change | |Cu |Copper |None |turned black |not soluble |No Change |No Change |No Change |No Change | |Zn |Silver |None |No Change |not soluble |No Change |No Change |omitted vapors and was fizzy |No Change | |MgO |White |None |Omitted gas |turned to a milky paste |Behaved violently when boiled |Basic |Got hot and turned to a bubbly paste |turned to a paste | |CuCO3 |Green |None |Turned black |dissolved to a milky green liquid |Separated back to its powder form |No Change |Completely dissolved |turned blue and dissolved | |Cu(NO3)2 |Blue |None |See observations |dissolved |Behaved violently when boiled |Acidic |See observations |dissolved | | NaCl |White |None |None |Dissolved |stayed dissolved |Basic |dissolved |dissolved | |…
Doc Hendley a marginal student who stays in school, a local bartender in a small town in North Carolina who spent most of his time drinking and playing music in bars or riding his Harley. Along the way, Doc realizes he can do something better with his life. Then he discovers that unclean water kills a child every twenty seconds he found his calling. He channeled his wildness, energy and intelligence into a charitable effort to help people around the world to have clean, potable water on a self-sustaining basis and thus with the help of Tasha, Wine to Water was born.…
A detailed explanation, one paragraph or more in your own words, of the colligative property being discussed and why that property changes the way that it does when the amount of solute is increased.…
For the firsts three sets of titration trials of baking soda powder was used. About 0.3 grams of baking soda powder were measured and mixed with 20mL of deionized water in a beaker. Three drops of the indicator bromothymol blue were put in the baking soda solution and mixed well. A burette and funnel were rinsed off using water and cleaned well. The burette and funnel were rinsed a second time using 5mL of the HCl solution that was prepared the previous week and disposed of in a clean beaker. The rest of the HCl solution was then put in the burette. The beaker containing the baking soda solution was placed under the burette. 1mL of the HCl solution was released at a time into the beaker with the baking soda until a change was observed. The results were recorded. The process was repeated three more times and the results were recorded. For the second sets of titration trails, fresh squeezed lemon juice was used. 5mL of lemon juice were used and three drops of the indicator phenolphthalein were put in the juice. The burette was then rinsed off with water and rinsed off a second time using NaOH and disposed of in a clean beaker. The rest of the NaOH solution was put in the burette and the beaker containing the lemon juice was placed under the burette. 1mL of the NaOH solution were released at a time into the beaker containing the lemon juice until changes were observed. The results were…
2. Carefully add 0.3 – 0.4 g of solid sodium bicarbonate (NaHCO3) to the evaporating dish. Do not do this over the balance! Then measure and record the mass of the evaporating dish + watch glass + NaHCO3.…
My hypothesis is that the Alka-Seltzer tablet will dissolve fastest in salt water, and the slowest in cold water. I think it will dissolve fastest in salt water because of the salt. I think it will dissolve slowest in cold water because the cold water doesn’t help the Alka-Seltzer dissolve faster.…
Not having a purpose in life or not knowing what to do or where to go might just be the worst feeling to have. I believe everyone has a purpose, something we were meant to do or be good at. Finding that one thing is just the hard part. The book Wine to Water shows us a story about a guy that really doesn’t get why he’s here. What his purpose really is until he finds out the worlds crisis for water and how he can actually help these people. Being in college, Just graduating from High school I think I can really identify with how he was feeling. Where will I really be in 10 years. Thats the million dollar question everyone would like to have answered.…