Baking soda is often used in experiments to neutralize vinegar. in the picture above, the beaker on the left contains a solution
of vinegar. what can you conclude about the picture on the right?

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The air is going to come out because of the low pressure.