Density And Flotation

Question 1

Mass

Answer 1

The mass of an object is the amount of matter in it.
It is measured in kilograms (kg) or grams (g). It is measured using an electronic balance

Question 2

Density

Answer 2

The density of a substance is the mass of one cubic cm of it. The amount of mass in a certain volume of a substance.
Density is measured in grams per cubic centimetre or kilogram per cubic metre (g/cm3 or kg/m3)
Density=mass/volume.