While the SI system may be useful, it is useless without the knowledge of how to use it to make precise and accurate measurements. The objectives in the experiment are to learn how to use laboratory equipment to determine volume, mass and temperature. It is also important to learn how to combine units to determine concentration and density in order to measure the density and concentration in different dilutions.
1)Gather DVD or CD, key, spoon and fork.
2)Measure the length of each item in centimeters with one degree of uncertainty, record. 3)Measure the length of each object in millimeters with one degree of uncertainty, record. 4)Convert measurements from millimeters to meters.
5)Gather 100 mL glass beaker, lighter, cup, burner stand, burner fuel and a thermometer. 6)Turn the tap water to hot, wait 15 seconds then measure the fill the 100 mL beaker to 75 mL with hot tap water and measure the temperature in (˚C). 7)Place the beaker of water on the stand and put on safety goggles. 8)Light the burner and placed it under the burner stand.
9)When the water comes to a full boil measure the temperature with one degree of uncertainty. 10)Wait 5 minutes and take the temperature similarly to step 5. 11)Place the lid on the burner fuel to extinguish the fire. 12)Run tap water cold for 15 minutes, measure the temperature as before. 13) Get a cup and add ice, after one minute record the temperature and after five minutes record the temperature. Convert the temperatures to ˚F and K. Mass Measurements
14)Gather a pencil, a key, 5 pennies 4 quarters and 4 dimes 15)Estimate the masses of each object listed in Table 3.
16)Record the mass of the pencil and repeat for the remaining objects in Table 3.
Volume and Density Measurements (Liquid)
1)Gather a graduated cylinder, short pipet and isopropyl alcohol 2)Record the mass of the graduated cylinder
3)Fill the graduated cylinder with 5 mL of distilled water using the short stemmed pipet 4)Place the filled graduated cylinder on the scale and record the mass 5)Calculate the mass of the water by taking the difference of the two masses 6)Repeat steps 2-5 for the isopropyl alcohol
7)Calculate the densities for each and find the percent error knowing that the density of water is 1 g/mL and the density of isopropyl alcohol is 0.786g/mL Volume and Density Measurements (Solids)
8)Gather the magnet, metal bolt, string, graduated cylinder, ruler, beaker and scale 9)Record the mass of the magnet and measure the length width and height in centimeters 10)Calculate the density by diving the mass by the volume
Water Displacement Method
11) Record the mass of the magnet
12)Fill the graduated cylinder with 7 mL and record the volume 13)Submerge the magnet into the water and record the volume, then calculate the density 14)Find volume by subtracting the final volume from...