Volcanic Activity in Room 5

Friday, December 4th, 2009
We made a volcano today. We got an acitmel bottle and put newspaper round it so that it looked like a volcano, and a tray underneath in case we made a mess. To make an ordinary volcano you need bread soda and vinegar, but we wanted a delux model so we used red food dye and wash up liquid as well. Bread soda and vinegar mixed together make a fizzy gas called Carbon Dioxide. This gas comes rushing out of the bottle. To make the foam red we used red food colouring, and for lovely bubbles we used a little wash up liquid as well.

The second time we tried this, we used only the bread soda and vinegar, but we used a bottle with a small opening so the fizz squirted a little. For best results we would have liked to have used an even smaller bottle. The third and final time we put the bread soda into a balloon and the vinegar in the bottle. When we stood the balloon up, the bread soda dropped into the bottle with the vinegar in it. The gas that was made blew the balloon up. It was exciting!