* Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means (e.g., gold, oxygen, carbon).

* Mixtures are combinations of two or more substances that are not chemically bonded (e.g., salt and pepper, air).

* Compounds are formed when two or more elements chemically combine in a fixed ratio (e.g., water, carbon dioxide).

Ice is simply water in its solid state. Water (H₂O) is a compound made up of two hydrogen atoms and one oxygen atom bonded together.

Let me know if you have any more questions!