* Elements are the simplest form of matter. They cannot be broken down into simpler substances by chemical means. Examples include oxygen, hydrogen, carbon, and gold.

* Washing up liquid is a mixture. It's made up of many different substances, including:

* Surfactants: These are the main cleaning agents that reduce surface tension and allow grease and dirt to be lifted away.

* Water: The base of the liquid.

* Solvents: These help to dissolve the grease and dirt.

* Fragrances and dyes: Added for scent and color.

Since washing up liquid is a combination of different substances, it is a mixture, not an element.