Final answer:
Colloidal particles carry electrically charged ions and can be found in mixtures like smoke, where they are colloidally dispersed and electrically charged. When attracted to highly charged electrodes, they neutralize and deposit as dust.
Step-by-step explanation:
Particles that carry electrically charged ions are called colloidal particles. These particles can be found in various mixtures, such as smoke, where they are colloidally dispersed and electrically charged. When these charged particles are attracted to highly charged electrodes, they become neutralized and deposited as dust.