Monday’s Activity: Measuring Stuff Measurements Length: Meter (m) Volume: Liter (L): 1 dm³ Mass: Gram (g): 1 cm³: 1 ml Time: Second (s) Amount of Stuff: Mole (mol): 6.02 x 10²³ Temperature: Kelvin: *C + 273.15=K Secondary Measurements: Ratios and Comparisons Velocity: Distance/Time = d/t = m/s Molarity:Mol/L Density: Mass/Volume = g/cm³ Buoyancy: The comparison of densities between two substances | Measuring Density of bismuth chunk Filled Graduated Cylinder With Water (500 mL) Bismuth weight 78 g Add bismuth to Water Measure water change (9mL) Calculate density 78g/8mL=9.75g/mL Checked against Computer; actual density of bismuth 9.789g/mL Measuring Density of Helium in balloon Density of air= .001225 g/ml Diameter of balloon= 22 cm= radius 11 cm Volume of balloon = 5575.28 cm³ Density of Air = 6.83g density of balloon + tape = 6.48 g Calculate helium density = 6.83 - 6.48=.35 g |
- I enjoyed the guided lab, because it meant that I could get help when I needed it, and when something didn't make sense he could describe it.
- Taking notes before the lab also helped because I could follow along with how to solve the equations with Andrew, instead of just watching him do it.
- While I did enjoy the guided labs, I also would have liked to move at a faster pace. I think I will do more individual labs, so that I can go faster and do two labs in one day.
- I had never thought about adding tape to a balloon to balance its density to equal that of air. I thought it was really cool when the balloon just floated in one spot. I learned how to calculate the density of an object, which I had learned in middle school but forgot how to do.
- Taking notes before the lab also helped because I could follow along with how to solve the equations with Andrew, instead of just watching him do it.
- While I did enjoy the guided labs, I also would have liked to move at a faster pace. I think I will do more individual labs, so that I can go faster and do two labs in one day.
- I had never thought about adding tape to a balloon to balance its density to equal that of air. I thought it was really cool when the balloon just floated in one spot. I learned how to calculate the density of an object, which I had learned in middle school but forgot how to do.