Measuring density

1

What changes take place to the arrangement of the particles when a solid melts into a liquid?

2

In which state of matter are the particles tightly packed in a regular structure?

3

What is the equation for density?

4

What is the density of a rock if it has a mass of 1500 kg and a volume of 0.5 m3?

5

What is the mass of a 5 cm3 block of iron that has a density of 7.8 g/cm3?

6

What is the mass of 15 cm3 volume of material that has a density of 50 g/cm3?

7

A block of iron has sides of 3 cm, 4 cm and 5 cm. Its mass is 468 g. What is its density?

8

What is the volume of 300 kg of water if it has a density of 1000 kg/m3?

9

A lump of metal of mass 80 g is immersed in a measuring cylinder of water. The reading increases from 20.0 cm3 to 49.6 cm3. What is the density of the metal?

10

What condition is necessary for an object to float on a liquid?