My group chose to use the Iodine test for starch. We also wanted to know if the powder would fizz ,so we used vinegar as an indicator for fizzing. Then we wanted to test for Physical Properties so we felt it, smelt it, looked at it. We also tested Alcohol to see if it would fizz or have a chemical reaction.
When we did are Iodine test it turned a blackish color so we know it has starch. We did the Vinegar test it fizzed for about 60 seconds then it settled down. We did the alcohol test it fizzed for 15 seconds. We did the Physical properties test it was sticky ,it was smooth ,but it was little bit rough when we felt it. We think it is green, red, and purple.