Do the preparation task first. Then watch the video and do the exercises. Remember you can read the transcript at any time.
Worksheets and downloads
Can you see that the bubbles pop as soon as I tried to touch them? That's because when we touch a bubble with our dry hands, we break the bubble's surface tension.
Our hands have a little bit of oil in them, and that keeps them nice and soft. But soap loves oil – that's why we use it to clean dirty, oily dishes. So when a soap bubble lands on our oily hands, those soap molecules try to take the oil away. But this bursts the bubble.
So what can I use to try and help me catch a bubble without it bursting? I'm going to use a glove. Now let's see what happens!
Wow! The glove is stopping the soapy bubble mixing with the oil on my hands, which means I can catch the bubble, and even bounce it! Wow!
Do you know any other fun science facts?