1.4 density

Question 1

define density and its SI unit

Answer 1

mass per unit volume
unit kg/m (cubic meter)

Question 2

equation of density

Answer 2

density = mass / volume or
ρ = m / V

Question 3

Describe how to determine the density of a regularly shaped solid

Answer 3

The mass is found on a balance and the volume by
measuring its dimensions with a ruler.

Question 4

Describe how to determine the density of an irregularly shaped

Answer 4

by pouring water into a measuring cylinder and finding the difference from the first reading and the second reading.
Calculate the density of the object by dividing the mass by the volume

Question 5

Describe how to determine the density of a liquid

Answer 5

The mass of an empty beaker is found on a balance. A known volume of the liquid is transferred from a burette or a measuring cylinder into the beaker. The mass of the beaker plus liquid is found and the mass of liquid is obtained by subtraction.