Select all the items that are related to compounds. 1.chemical bonding 2.physical change 3.maintain original physical properties 4.new physical properties 5.mixture of 2 or more elements

The correct answer is option 3 and 5.

Compounds are made up of a mixture of 2 or more elements such as H₂O or NaCl.

Compounds have physical properties that are constant and hence allow us to identify them. Different physical properties include color, solubility, mass, odor, density, boiling point, melting point etc

if you mean hydrogen and oxygen then water is the product