You can boil the salt water. The water will evaporate while the salt will be left behind because it's a solid. Salt has a much higher boiling point than water (2,575° F), so that's why it won't evaporate with the water.
It is an element. Aluminun foil is aluminum prepared in thin leaves.
It measures the acidity/basic level, that rules A out
hope this helped a little
A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds. Elements: are pure substances made up of only l type of atom. Atoms of the same element are identical in properties.
Carbon has 7 neutrons
Hope this helps
