Explain how paper chromatography separates substances.

Which substances have the lowest melting points: ionic covalent, or metallic

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

  the mississippians were considered to be  horticulturalists, which means they were