I NEED HELP ASAP ON ALL OF THESE QUESTIONS PL this element has three enegry levels and properties of metal and non metal

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Summarize possible ways in which phases of matter could combine to form a solution.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f