A double replacement reaction can be best described as a reaction in which a substitution takes place.
two atoms of a compound are lost.
ions are exchanged between two compounds.
electrons are exchanged between two atoms.

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

What is the correct lewis structure for chloroform chcl3