Water Alcohol And Oil Lab Report

e.) The solid would be under alcohol but over water and salt water. Salt water had a calculated density of 1.025 g/ml, water had a calculated density of 1.000 g/ml, and alcohol had a calculated density of 0.857 g/ml. The solid had a higher density than alcohol but had a lower density than the two types of water.

The “bubble” that made by stroking alcohol on the penny was tinnier than the first liquid. Third liquid - There were 34 drops of the dish wash oil. The water external had much more tightness than the first and

2) Explain the trend in the solubility of the three alcohols in water. (In your discussions, bring out the theoretical concepts on which

***Repeat steps 2-4 for each of the following: 5 mL of oil and 2 g each of cornstarch, sodium chloride, and sodium bicarbonate.

In order to carry out this experiment, we had to go through the process of multiple steps. First, we measured 100 ml of water in two different-sized square containers. The bigger container had a surface area of 225 centimeters squared, while the smaller container’s surface area was 100 cmշ. Next, we put both containers under a heat lamp for an equal amount of time. Then we set the containers aside.

(Click Slide) Another unique property of water is its high specific heat capacity. Due to the strong hydrogen bonds that exist between water molecules, a lot of energy is needed to break down the bonds. As the Particle Theory states, particles move faster and further apart when heated. This is why water helps maintains a moderate temperature on Earth and different bodies of water, crucial for the survival of organisms.

The volume of a small test tube and a thin-stemmed pipet were determined in this section of the lab. Water was poured into a small test tube until the water reached the very top edge of the test tube. The test tube was then emptied into a plastic 25 mL graduated cylinder and volume was measured and recorded into data table 3. A think-stemmed pipet was completely filled with water. Drops were carefully counted and emptied into the empty plastic 25 mL graduated cylinder until the water level reached 1 mL. The number of drops in 1 mL was recorded into data table 3. The thin-stemmed pipet had a total volume of 4 mL and that was also recorded into data table 3.

(Shake the bottle vigorously). This bottle contains not only two fluids with different densities, but it also has beads with different densities. When I shake the bottle, they mix. But as it separates, the beads will also float to different levels.

Data: We found that the plastic floated in all substances. (A, B, C, and D). This meant that the density of our plastic was less than or equal to 0.91g/cm3 (because the least density of the 4 liquids was 0.91g/cm3)

The next step in this lab is to rinse the Erlenmeyer flask with distilled water down the drain and then repeat the experiment, this time adding 10 ml of 0.10M KI and 10 ml of distilled water to the flask instead. The flask should again be swirling to allow the solution to succumb to the same temperature as the water bath and once it has reached the same temperature, 10 ml of 3% H2O2 must then be added and a stopper must be immediately placed on the flask and recording should then begin for experiment two. After recording the times, the Erlenmeyer flask must then be rinsed again with distilled water down the drain. After rinsing the flask, the last part of the lab can now be performed. Experiment three is performed the same way, but instead, 20 ml of 0.10 ml M KI and 5 ml of distilled water will be added and after the swirling of the flask, 5 ml of 3% H2O2 will be added. After the times have been recorded, data collection should now be complete.

Water: a necessary facet to all living things. For animals, water can be a home or a drink. As for humans, the uses of water are endless. Not only do we use water as a beverage or washing clothes or dishes, but we also use water for toilets, various kinds of plumbing and other things that aren’t as easily identifiable. As of 2005, this 70% of our Earth has been manipulated and used for thermoelectric power (41.5%), irrigation (37%), domestic affairs (8.5%), public supply (5.4%), industry (5%) and aquaculture (2.6%).1 The importance of water is infinite, not only to our way of life, but also our lives. We need to drink water to ensure the health of individual cells of the body, lubricate joints, moisten mucous membranes of the organs and many other vital bodily functions.2 Not only do we expect the availability of water, but it is highly important to humans and all living things. Although it is such an integral part of our Earth, one may ask about some of its properties and characteristics.

Abstract I want to find out the amount heat given off by four alcohols; methanol, ethanol, propanol and butanol. I did this through setting the alcohols a light and heating 100ml of water up 22oC. From this I found out that the alcohols with the most amount of carbons were producing more energy therefore more heat. Introduction I investigated the differences in the amount of heat given off in between four types of alcohols; Methanol, Ethanol, Propanol and Butanol. I was measuring the difference in temperature between these Method 1.

The fact that most small biological molecules dissolve in water is very important because all the chemical reactions that take place in cells do so in aqueous solution. Plants cam only obtain mineral salts in solution and human digestion will only dissolve soluble foods, meaning large starch molecules must be broken down into soluble sugars. Also many organisms living in water spend most of their time underwater, yet they require oxygen to respire, and as water is such a good solvent the required oxygen gas is dissolved in water. Water’s solvent properties also allow it to act as a transport medium for polar solutes for example the movement of minerals to lakes and seas and removal of metabolic wastes such as urea and ammonia in urine. Water’s thermal properties relate to its heat capacity.

Water is a polar molecule made up of on atom of hydrogen and two atoms of

When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best results when testing the pH within a solution. The pH, which stands for the proportion of hydrogen ions in a solution, could be acidic (acidosis), neutral or basic (alkaline). The pH scale goes from numbers 1 through 14. A pH of 7 is neutral;