Three experiments to do using balloons. Simple and easy to follow. Great for kids. The first experiment used pins and we see that if we increase the number of .\r<br>\r<br>Some things in this world just dont mix. dogs and cats, oil and water, needles and balloons. Everyone knows that a balloons worst fear is a sharp object. even .\r<br>\r<br>This is a simple and fun trick. Simply place an empty plastic drink bottle in the freezer. Leave for 5 minutes. Bring it out and quickly put a balloon over the top hole .
