FLVS homeschool

1.7 Accuracy and Precision Lab Worksheet

Part I: Density of Unknown Liquid

Trial 1
Trial 2
Trial 3
Mass of Empty 10 mL graduated cylinder (grams, g) [1]

Volume of liquid (milliliters, mL) [2]

Mass of graduated cylinder and liquid (grams, g) [3]

Part II: Density of Irregular-Shaped Solid
Mass of solid (grams, g) [4]

Volume of water (milliliters, mL) [5]

Volume of water and solid (milliliters, mL) [6]

Part III: Density of Regular-Shaped Solid
Mass of solid (grams, g) [7]

Length of solid (centimeters, cm) [8]

Width of solid (centimeters, cm) [9]

Height of solid (centimeters, cm) [10]

Calculations
Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation.
Part I: Density of Unknown Liquid
1. Calculate the mass (g) of the liquid for each trial (A). (Subtract the mass (g) of the empty graduated cylinder [1] from the mass (g) of the graduated cylinder with liquid [3]) mass of the liquid = [3] - [1] = (A) g
Trial 1

Trial 2

Trial 3
2. Calculate the density (g/mL) of the unknown liquid (B) for each trial. (Divide the mass (g) of the liquid calculated above (A) by the volume (mL) of the liquid [2])
(A) / [2] = (B) g/mL
Trial 1:

Trial 2:

Trial 3:

Part II: Density of Irregular-Shaped Solid
3. Calculate the volume (mL) of the irregular-shaped solid (C) for each trial. (Subtract the volume (mL) of the water [5] from the total volume (mL) of the water and solid [6])
[6] – [5] = (C) mL
Trial 1:

Trial 2:

Trial 3:

4. Calculate the density (g/mL) of the irregular-shaped solid (D) for each trial. (Divide the mass of the solid [4] by the volume of the solid calculated above (C))
[4] / (C) = (D) g/mL
Trial 1:

Trial 2:

Trial 3:

Part III: Density of Regular-Shaped Solid
5. Calculate the volume (cm3) of the regular shaped solid (E) for each trial.