Iodine with powder
It shows that this powder has starch in it.
PR and powder
It shows that it is a base.
Vinegar and powder
It shows that there was a chemical reaction.
Results and Conclusion
Red,and Green.Because the red fizzed and the green had a chemical reaction
Input Learning Message
I learned how to record data. I also learned how to what a chemical reaction and physical reaction is. I know what a cross contamination is too.