Is elements chemically combine they form compounds that have properties that are similar to those of the uncombined elememts?

Answer 1

No, compounds do not necessarily have similar properties to their uncompounded elements. Example: Hydrogen and Oxygen are both gasses at normal temperature and pressure, but their compound, dihydrogen oxide (water) is a very distinctly different substance.

Answer 2

When elements chemically combine to form compounds, the properties of the resulting compound are often different from those of the individual elements. This is due to the new chemical bonds formed between the elements which can result in unique properties such as different melting points, boiling points, and reactivity compared to the individual elements.