the one below is orange with vinegar. to see how much acid it has in it. it fizzed right as the vinegar hit it
the one bellow is vinegar getting dropped into green. we chose this test to see if it would fizz.
the one above was the most fizz we had. it fizzed out of the box
the one above is open exploration we had orange red and vinegar.
the one above was red with vinegar.