Which statement best describes how water’s properties relate to its functions in a human’s biological systems?
a. water absorbs a lot of energy from the skin due to its high specific heat.
b. water enters the body and provides support due to capillary action.
c. water decrease the body’s density to allow it to float.
d. water dissolves and transports nonpolar covalent compounds in the body.

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

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6