Question

1. How is the density of a substance calculated?

2. If the shape of an object is irregular, like a stone, how can you measure its volume? (3pts)

3. If the volume of a cube of wood is15.625 cm3 and its mass is 10.00 grams, show the calculation for the density of the wood. (2pts)

Answer 1

1. Density is the mass of a substance divided by its volume. D= m/v 2.
To measure the volume of an irregular object you can fill a container with water and submerge the item. You would then measure the volume of water that was displaced by the obect.
3. D = m/v so m = 10.00 grams and v = 15.625 cm3 D= 10.00 grams/15.625 cm3 = 0.64 g/cm3