Physical Science Triple Beam & Graduated Cylinder Lab revised 2010

Ms. Toal Date

KHJS Name Period

PART 1: Triple Beam Balance

Procedure:

1.  Listen and watch carefully to the demonstration on how to use the Triple Beam Balance.

2.  You and your lab partner will share a triple beam balance.

3.  Check to see that the Pointer is pointing to zero.

4.  If it is not, check to see that all the Riders are all the way to the left of the zero mark.

5.  Adjust the balance by turning the Adjustment Knob slowly until it points to zero. Too much will break it!!

6.  Find the mass of the film canisters and the paper clip.

7.  Record the canister letter and mass in Table 1.

Canister A / Canister B / Canister C / Paperclip
Mass (g)

Data:

Analysis and Results:

1.  How many hands should you use to carry the triple beam balance?

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2.  Why is it important that the pointer is pointing to zero before you have placed an object on the pan?

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3.  What canister had the largest mass?

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4.  Was it easier to find the mass of an object with a large mass or a small mass? Explain.

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PART 2: Graduated Cylinder

Procedure:

1.  With your group, find the graduated cylinder for item A in the “Graduated Cylinder Amounts” list (below). Fill it to the amount stated, using the beaker of water or medicine dropper to add water to the graduated cylinder

2.  In the space provided at the bottom of the page, DRAW a picture of the markings of the graduated cylinder and the MENISCUS. Do not draw the entire graduated cylinder, just draw the area around the meniscus. See the “Questions” below for examples.

3.  Pour water back into the beaker. NO water goes down the sink!!

4.  Move on to the next letter in the “Graduated Cylinder Amounts” list.

Graduated Cylinder Amounts:

A.  10mL graduated cylinder: Fill to 8.5 mL

B.  25mL graduated cylinder: Fill to 16 mL

C.  50mL graduated cylinder: Fill to 36 mL

D.  100mL graduated cylinder (the one with blue numbers): Fill to 72 mL

E.  100mL graduated cylinder (the one with clear numbers): Fill to 72 mL

F.  250mL graduated cylinder: Fill to 75 mL

Graduated Cylinder Drawings

A: B: C:

D: E: F:

Questions:

Write how many mL each graduated cylinder is showing at the meniscus:

1. 2. 3. 4. 5.

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