This acid removes oxidation from pennies. Removing the copper oxide is a chemical change. The copper molecules in the vinegar and salt solution settle on paper clips after a period of time, but wipe off easily. This is not a chemical change.
Related
- How long after exposure do you get athlete's foot? The incubation period for the fungi is generally thought to be from 4 to 10 days. It is after this incubation period that the physical signs of athlete's foot start to manifest themselves. It is during the incubation period that further direct or indirect infection is most likely to occur.
- Which Indian Head penny is rare? 1888 Indian Head Penny: Last 8 Over 7 Variety This is the rarest and one of the most valuable Indian Head penny varieties found so far.
- Can blood rust? Our blood doesn't get rusted even if it contains iron and oxygen because rust is formed when ferric oxide Fe2O3 combines with water molecules to form the oxidized iron Fe (III) and hydrated water molecules.
- Does vinegar neutralize acid? No. Both vinegar (dilute acetic acid, aqueous CH3COOH) and muriatic acid (hydrochloric acid, aqueous HCl) are both acids. If you add vinegar to muriatic acid, it will dilute it and decrease the acidity due to the change in concentration, but it will not neutralize it.
- Can I use steel wool on copper? Do not use abrasive cleaner or steel wool to clean copper. High heat and moisture are enemies of copper and should be avoided. Copper pots can become tarnished because of strong acids and alkalis and, therefore, acidic foods like fruits, tomatoes, and vinegar should never be boiled in copper pots or copper-clad pots.
- Will lemon juice clean coins? Vinegar and lemon juice are acidic and will remove the copper oxide, leaving the pennies shiny. Though a soap and water solution is good at cleaning many things, it does not contain an acid and does not clean the pennies as well.