Answer is: The solution has now become a good conductor of electricity.
Hydrochloric acid (HCl) dissociate on positive ions or cations of hydogen (H⁺) and negative ions or anions of chlorine (Cl⁻) accordinf to balanced chemical reaction:
HCl(aq) → H⁺(aq) + Cl⁻(aq).
When there are free cations and ions, water solution can conduct electricity.
ANSWER
An atom of element is electrically neutral because the number of positive protons are equal to number of negative electrons.
Substance A will sink because it is more dense than water. An object that is more dense than water will sink and an object that is less dense than water will float.
anything with plus or minus on them are ions
so that is 4 of them
po4-3
hco3-
al+3
hg2+2