Reading Equipment Reading A Graduated Cylinder Reading the
- Slides: 16
Reading Equipment
Reading A Graduated Cylinder
Reading the Meniscus Always read volume from the bottom of the meniscus. The meniscus is the curved surface of a liquid in a narrow cylindrical container.
Graduated Cylinder Meniscus
Try to avoid parallax errors. Incorrect: viewing the meniscus from an angle Correct: Viewing the meniscus at eye level
What is the value of this graduated cylinder?
What is the value of this graduated cylinder?
Reading the Thermometer Determine the readings as shown below on Celsius thermometers:
How to Use a Triple-Beam Balance
Parts of a Balance Sliders Pan Thumbscrew Zero Mark
Balance Setup Ø Move all three sliders so that they read ‘zero’. Ø Make sure that there is nothing on the pan and that it is clean. Ø Check to see if the balance reads zero.
Balance Setup Ø Your balance isn’t reading zero so you need to turn the thumbscrew to adjust the balance until it reads zero
Moving Sliders Ø Move the sliders, beginning with the largest. When moving a slider causes the balance to tip, move the slider back to the previous position. Ø Move the next slider until it tips the balance. Place is in the previous position. Ø Move the final slider until the balance reads zero.
Reading Sliders Ø Read each of the sliders and add their weights together. The sliders indicate the mass is: 373 g
Reading Sliders Ø When you read the last slider, notice that the smaller lines represent tenths.
Reading Sliders Ø This measurement is past the third line following the 3 on small slider. This indicates a mass of: 373. 3 g
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