Density

Science

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Definition of density

Mass per unit volume

The reason why an object floats on water

The object has a lower density than water

The reason why an object sinks in water

The object has a higher density than water

Examples of objects that float on water

Ping pong ball, leaf, sponge & cork

Examples of objects that sink in water

Key, coin, magnet & stone

The reason why oil float on water

The density of oil is lower than the density of water

The reason why honey sinks in water

The density of honey is higher than the density of water

Method to increase the density of water

Dissolving sugar or salt in water

The reason why dissolving sugar can increase the density of water

Dissolving sugar and salt in the water will increase the mass of the one unit volume of water

The application of density on a yacht's anchor

Anchor is made from metals, hence it has a higher density than water which causes it to sink in water and help anchor the yacht

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