chemistry

Lab 1 Report. Measurement of Length and Volume

Part 1. Measuring length using a ruler. Write the measurement with the correct number of

significant figures depending on the ruler shown.

1a. Length of black pin: _______________

1b. Length of red pin: _______________

1c. Length of blue pin: _______________

Part 2. Conversion factor between centimeters and inches.

The length of a copper wire was measured using two rulers. One rule in centimeter (cm), the

other ruler in inches (in). The data is shown below:

Length of copper wire in centimeters: 10.16 cm

Length of copper wire in inches: 4.00 in

2a. Calculate the ratio of cm to in:

𝑐𝑚

𝑖𝑛 = 𝑐𝑚/𝑖𝑛

This ratio indicates the number of centimeters in 1 inch (centimeters per inch)

Part 3. Using conversion factors in dimensional analysis. Show work to receive credit for your

answer.

3a. Provide your height in inches, then use the conversion factor determined in 2a to convert

from inches to cm.

3b. The nearest gas station is 4.58 km away. What is this distance expressed in miles?

1.609 km = 1 mile

Part 4. Volume of geometrically shaped (regular shaped) solids – Volume of a Block

Determine the dimensions in centimeters (height, length, and width) using the rulers shown.

Include units in your measurements. Write the measurement with the correct number of

significant figures

4a. height: ______________ 4b. length: ______________ 4c. width: ______________

Using the dimensions collected, calculate the volume of the block. Include the appropriate

units in your work and answer. Report your answer with the correct number of significant

figures

Volume of block = height x length x width

4d. Volume of the block = ______________ (Show work)

Part 5. Volume of geometrically shaped (regular shaped) solids – Volume of a cylinder

Determine the dimensions in centimeters (height, diameter) using the rulers shown.

Include units in your measurements. Write the measurement with the correct number of

significant figures

𝑟𝑎𝑑𝑖𝑢𝑠 = 𝑑𝑖𝑎𝑚𝑒𝑡𝑒𝑟

2

5a. height (h): ____________ 5b. diameter: ____________ 5c. radius (r): ____________

Using the dimensions collected, calculate the volume of the cylinder. Include the appropriate

units in your work and answer. Report your answer with the correct number of significant

figures

Volume of cylinder =π x h x r2

5d. Volume of the cylinder = ______________ (Show work)

Part 6. Measuring volume of liquid using a graduated cylinder.

Determine the volume of liquid in each graduated cylinder (in milliliters).

Include units in your measurements. Write the measurement with the correct number of

significant figures

graduated cylinder A graduated cylinder B graduated cylinder C

6a. Volume of liquid in graduated cylinder A: ____________

6b. Volume of liquid in graduated cylinder B: ____________

6c. Volume of liquid in graduated cylinder C: ____________

6d. What is the total volume when A, B and C are added together? _______

Part 7. Measuring volume of solids by displacement of liquid.

Determine the volume reading in each graduated cylinder (in milliliters).

Include units in your measurements. Write the measurement with the correct number of

significant figures

water water + metal cylinder

7a. Volume of water: ____________

7b. Volume of water + metal cylinder: ____________

7c. Volume of metal cylinder: ____________ (Show work)

Part 8. Conversion factor of volume units

With a graduated cylinder and a dropper, it was determined that 42 drops were required to

reach a volume of 2.00 mL

8a. Calculate the ratio drops to mL:

𝑑𝑟𝑜𝑝𝑠

𝑚𝐿 = 𝑑𝑟𝑜𝑝𝑠/𝑚𝐿

This ratio indicates the number of drops in 1.00 mL (drops per mL).

8b. Write the ratio above (8a) in equation form. Include units.

____________ = ____________

8c. Write the two conversion factors that can be obtained with the information from 8b:

8d. Using the appropriate conversion factor from 8c, calculate the number of drops in 12.0 mL.

Show work.

8d. Using the appropriate conversion factor from 8c, calculate volume in milliliters (mL)

corresponding to 14 drops. Show work.

8e. It is important to know that 1 mL equals 1 cubic centimeter (cm3 or cc). How many cubic

centimeters are there in an 8.00 oz bottle of cough medicine? Show work.

1.00 oz = 29.6 mL

Watch the video:

1. Measurement: Length, Volume, mass and Temperature

https://www.youtube.com/watch?v=xhZnzvuHWb0