Today’s Agenda… Bellringer: What is volume? How is it different than area? Notes on Measuring Mass and Density Activity: Crazy Canisters.

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Today’s Agenda… Bellringer: What is volume? How is it different than area? Notes on Measuring Mass and Density Activity: Crazy Canisters

Measuring Mass Study Pack #5

Measuring Mass Mass is the amount of matter in an object and it stays the same no matter where you are You can measure mass using a triple-beam balance Mass is measured in grams (g)

Triple-Beam Balance A triple beam balance includes the following parts: Adjustment knob Pan Riders Beams 0-500 grams 0-100 grams 0 – 10 grams Pointer

Triple-Beam Balance Before using a triple-beam balance to measure an object you must calibrate it 1. Slide all of the riders back to zero 2. Check to see that the pointer points to zero 3. If not, twist the adjustment knob until it does 4. You must make sure your scale is calibrated each time you measure an object

Measuring Mass on a Triple-Beam Balance Measuring mass directly Measuring mass by difference

Measuring Mass Directly 1. Place the object on the pan 2. Move the riders on the beams until you get the lines on the right side of the scale to match up again

Measuring Mass Directly Once you have balanced the scale, add up the amounts on each beam to find the total mass

Measuring Mass by Difference Used to find the mass of a liquid 1. Find the mass of an empty beaker and record this mass. 2. Pour the liquid into the beaker and find the mass of the beaker and the liquid. Record this mass. 3. Subtract the mass in #2 from the mass in #1 to give you the mass of the liquid