Skip to main content

Can ketchup clean a penny?

764,364 Views

1,644 Questions Answered

Best of Web

Let’s Begin…

Have you every noticed that some pennies are shiny, but some are dirty? Let's learn why some pennies get dirty AND how we can clean a penny in this video!

Before they put the pennies in the cups, what did you think was going to happen? Why?

Sign in to answer question

About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

More from How Things Work