List the liquid mixtures from most sense to least dense using evidence and reasoning:

1) 1/2 cup of water
2) 1/2 cup of water + 2 tablespoons of salt
3) 1/2 cup of water + 2 tablespoons of sugar
4) 1/2 cup of water + 2 tablespoons of flour

gas

explanation:

smoke is the matter of a gas

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.