General Chemistry Lab I-DAX-DL01

Density Work Sheet

A. SAME MASS Each block has the same mass. Determine the density and draw conclusions regarding density of objects with the same mass. What do you notice in your answers for #1 and #2? Explain your observation.

Object Mass Volume Density Float or sink in water?

1 5.00 g 4.00 cm3 2 5.00 g 10.00 cm3 3 5.00 g 2.50 cm3 4 5.00 g 1.23 cm3

B. SAME VOLUME Each block has the same volume. Determine the density and draw conclusions regarding density of objects with the same mass. What do you notice in your answers for #1 and #2? Explain your observation.

Object Mass Volume Density Float or sink in water?

1 6.00 g 5.00 cm3 2 8.00 g 5.00 cm3 3 4.00 g 5.00 cm3 4 2.00 g 5.00 cm3

C. SAME DENSITY Each block has the same density. Determine the density and draw conclusions regarding density of objects with the same mass. What do you notice in your answers for #1 and #2? Explain your observation.

Object Mass Volume Density Float or sink in water?

1 3.00 g 3.75 cm3 2 4.00 g 5.00 cm3 3 2.00 g 2.50 cm3 4 1.00 g 1.25 cm3

D. MISTERY OBJECTS Each object is a mystery object. Your job is to fill in the table below to determine what material each object is made of.

Calculate the density and determine whether each block will float or sink in water.

Check the table below and determine what material each block is made out of.

Object Mass Volume Density Float or sink in water?

Material the object is made of

1 65.14 g 3.38 cm3 2 0.64 g 1.00 cm3 3 4.08 g 5.83 cm3 4 3.10 g 3.38 cm3 5 3.53 g 1.00 cm3

DENSITY OF COMMON OBJECTS

ethanol (grain alcohol) 0.810

gasoline 0.700

ice 0.920

water at 20°C 0.998

water at 4°C 1.000

seawater 1.03

milk 1.03

coal 1.1-1.4

apple 0.640

magnesium 1.7

granite 2.6-2.7

diamond 3.53

steel 7.8

iron 7.8

copper 8.3-9.0

lead 11.3

mercury 13.6

gold 19.3

platinum 21.4