POP

In chemistry we did a lab that made a strong barking noise. In the lab we filled test tube half with water then we put calcium in it and then w put another test tube on top of the other test tube with the test tube that went on the other test tube, we took it off and put a lighter under the tube and when we did that itmade a loud dog barking like noise. The first time we did it we didn't know that the noise was going to happen it scared us alot. bye bye bye bye until next lab. :)