Los hidróxidos están formados por el ion hidroxilo el cual se representa (OH)-1 y un metal. Del siguiente listado debes elegir de manera acertada los compuestos que representan hidróxidos: 1. Ba(OH)2 2 Cl2O7H 3. Fe(OH)2 4. Al2O 5. Hk2O *

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance