Which of the following are substances and which are mixtures. Explain.

Question

helium gas used to fill a balloon

the juice squeezed from a lemon

kool-aid

salt used to de-ice roads

Answer 1

Helium is a substance; in particular an element of the periodic table.

The juice from a lemon is a mixture of citric acid, ascorbic acid, other compounds and fibre mixed with or dissolved in water

Kool-aid is a mixture of various flavours, dyes and other substances.

Salt is a substance; in this case a compound (sodium chloride).

Answer 2

Substence,Substence,Mixture,Substence there ya go!