5.3 describe experiments to determine density using direct measurements of mass and volume

1. First, measure the mass of an object (weigh it)
2. Then measure the volume. If the object is irregular (e.g. not a cuboid/easily measurable-shape*, then take a set amount of water (eg. 100ml) and fully submerge the object in the water. Measure the rise of the water (eg. From 100ml to 130ml). Or measure using a eureka can. If object is regular, however, you can measure lengths to find the volume.
3. Use the equation density = mass/volume to find the density

*okay so easily-measurable shape isn't correct English but you get what I mean