What Arrhenius discovered, was that water simply dissolves certain substances, like salts, into their constituent ions, which themselves carry the charge.
We are aware now that nanoplastic, the very, very small particles of plastic, carrying their negative charge, can go straight through the pores of your skin.
These ions in water are called electrolytes; literally, loosened electricity, because separating through dissolution frees them to act independently and carry their electrical charge around.
Keep in mind that potassium ions carry a charge, so the difference in concentration also leads to a difference in charge - establishing an overall electrochemical gradient across the cell membrane.
Keep in mind that these potassium ions carry a charge, so the difference in concentration also leads to a difference in charge, which establishes an overall electrochemical gradient across the cell membrane.