We worked in small groups. We got to choose two things mix but thy had to be in different lists. In the acids list was lemon juice, vinegar, orange juice, tomato juice and grapefruit juice. In the bases list was washing soda, baking powder and chalk.
When some things mixed they bubbled up and fizzed. Some changed colour a little bit. We got the biggest bubbles from mixing vinegar and baking powder. The chalk didn't fizz very much at all.
It went fizzy from a chemical reaction. That mean the acid and the carbonate mixed and changed and there was a gas given off. The gas from a carbonate is carbon dioxide.
It was fun to do the experiments. For some of us it was the first time doing experiments like this.
By Alex Neale and Alice Roycroft of LC2