<span>Eukaryotic cells contain organelles that perform specialised functions.</span>
(also called Observational Error) is the difference between a measured quantity and its true value. It includes random error
<span>This is a physical property. Physical properties involve changes of phase, or state of matter, of which melting is an example. Melting involves a change from a solid state to a liquid state. The internal energy of the solid increases, usually by applying heat, which increases the temperature to the melting point of the substance.</span>
