Chemical+Popguns

A plastic soft-drink bottle A cork or bung to fit the bottle Vinegar Sodium bicarbonate Measuring Spoons
 * Chemical Popguns **
 * __ What you need: __** <span style="background: black; border-bottom-color: black; border-bottom-width: 1pt; border-left-color: black; border-left-width: 1pt; border-right-color: black; border-right-width: 1pt; border-top-color: black; border-top-width: 1pt; color: black; font-size: 0pt; layout-grid-mode: line; mso-ansi-language: X-NONE; mso-bidi-language: X-NONE; mso-border-alt: none black 0cm; mso-fareast-language: X-NONE; mso-font-width: 0%; padding-bottom: 0cm; padding-left: 0cm; padding-right: 0cm; padding-top: 0cm;">

 1. Pour vinegar into the bottle until it’s one third full. 2. Add 2 teaspoons of sodium bicarbonate. 3. Quickly and firmly push in the cork or bung. 4. Stand WELL back and watch.
 * __ What you do: __**

The cork or bung exploding from the bottle could injure people nearby. Make sure that you stand well clear.
 * __ Safety Warning: __**

// Although this is a simple demonstration, it is spectacular and very effective for showing that something tangible is actually produced in the **reaction.** That ‘something’ is **carbon dioxide**, which has its own properties and uses. // // In this experiment the **CO** //**// 2 //** // (carbon dioxide) builds up and blasts the cork/bung from the bottle. // // Try allowing the **CO** //**// 2 //**// to build up and then pull the cork out slowly by hand before it blasts off. // // What can you hear? // // Can you hear the hissing sound? Do you know what this is? // // It is the escaping gas and if you look closely you might actually see the **CO** //**// 2 //**// in a vapour. //