Why do bare feet feel colder on a tile floor than on a rug? carpet prevents cold from reaching your feet. tile conducts the heat away from your feet. tile conducts the cold toward your feet. carpet heat to reach your feet.

pure substance: iron,copper

impure substance: water,charcoal

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products