Volcanoes!!!

We made predictions about what would happen when we put vinegar on top of bicarbonate of soda. Some of us got it right.  We tried it in a bottle because it has a smaller top to see how it would flow. We decided to make our own volcano out of plasticine. We chose plasticine because it is waterproof.  The volcano was put into a bowl to make sure it didn't make a mess and the bicarbonate was put in first followed by the vinegar.  We were amazed at how much the volcano erupted.  The smell was terrible but we had a lot of fun.