The correct answer is light...
B. Molecules in both the metal and the surrounding air will start moving at higher speeds.
The answer is (2). The question only ask the production of acid reacts with base. The acid has H+ ion and base has OH- ion. When they react, the production will always contain H2O.
The density (d) of the substance is the quotient obtained when we divide the mass (m) of an object by the volume (v) it occupies. Mathematically,
d = m / v
The density of soap is greater compared to that of the sponge because soap is so much heavier compared to sponge. Sponges are usually made up of porous lightweight materials.
