The antacid is neutralized, but not as neutralized as it would be if it was in one's stomach. The stomach acid neutralizes the antacid more than the water, because the stomach acid has a lower pH and therefore causes a more vigorous acid-base reaction. It is a chemical change.
ACID
Dissolving an antacid tablet in water can have an endothermic effect, meaning it absorbs heat from the surroundings and lowers the temperature of the water. This happens because the reaction between the antacid and water requires energy to break the bonds in the tablet and dissolve it.
When water evaporates, salts dissolved in the water are left behind and form solid crystals.
When an antacid tablet dissolves in water, it undergoes a chemical change. The active ingredients in the tablet, like calcium carbonate or magnesium hydroxide, react with stomach acid (hydrochloric acid) to neutralize it, forming salt and water. This chemical reaction helps to relieve acidity in the stomach.
The physical properties of water can change when a compound is dissolved in water. The dissolved compound will determine which properties change. Some will change the surface tension, others will change the pH. Many changes are possible.
Salt is dissolved in water and pepper not.
They are partially dissolved.
Amphetamine has a very low solubility in water.
Though antacid R) is not a pure, chemically defined compound, the answer is most expectedly: "Physical only".R) "An antacid medical tablet may contain any substance, generally a base or basic salt, which neutralizes stomach acidity"It wouldn't be nice, would it, for the stomach if a chemical reaction took place when taking the tablet with water.
Dissolving in water is a physical change.
Perchloric acid is dissociated in water.
Physical