oil
water by:jacky g
water
any liquid that had hydrogen, oxygen and is moist (of course it will be moist) to rust it need all the materials above can make pennies rust remember rusting only applies to iron items. to preserve pennies you can store them in oil
Vinegar is known to rust a penny the fastest due to its acidic nature, which accelerates the oxidation process on the coin's surface. Placing a penny in vinegar for a short period of time will result in visible signs of rust forming.
here is one i did which liquid can make a nail paperclip and penny rust fastest and for more go to WWW.terimore.com click on 400 best science fair projects and ever though it is a shopping thing it gives you ideas.
salt water
Lemonade
a penny because its the oldest i think and it been out for {YEARS} plenty and plenty of years lol but the penny will rust the fastest YAY ========>>>>>sucha cry baby<<<<<==========
pennies don't rust, they're made of cooper, rust is iron-oxide (meaning it has iron and oxygen in it). But copper oxidises (tarnishes). so a liquid with a high oxygen content would work
Coke will rust a penny the fastest due to its high acidity and sugar content. Ginger ale and Sprite have less acidity and sugar, so they would not rust a penny as quickly as Coke.
water and iron. Creating iron oxide aka rust.
vinegar, soda, and water after 2 weeks