Jose is conducting an experiment to investigate the properties of an unknown powder. Jose's observations are listed on the data table below: Observations of unknown
Observations of an unknown powder
1 The powder melts when heated.
2 The powder has large, white, crystals.
3 The powder dissolves in water.
4 The powder reacts with acid.

Which of the following shows a physical and a chemical property of the powder?

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.