Could a mixture be made only element and no compounds

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator