Question
A chemistry class is experimenting with iodine to see which common white powder items will react and make the iodine change color. Which item listed will have a chemical reaction with iodine?
baking soda
powdered sugar
salt
cornstarch
baking soda
powdered sugar
salt
cornstarch
Answers
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1) corn starch
2) the indicator will change the color of the substance
3) it will bubble and foam
4) the test was inconclusive because the student forgot to add heat
Guys if you are going to write answer don’t write it out as a,b,c, or d because each test has its answers swapped to be in different places! Were in this together guys so always help each other out! A few tips to try to avoid jiskha so you can get more confidence in test taking is take notes and try not to search up a answer, instead search up why something happens or how to do the type of math formula, good luck this 8th grade year guys!
2) the indicator will change the color of the substance
3) it will bubble and foam
4) the test was inconclusive because the student forgot to add heat
Guys if you are going to write answer don’t write it out as a,b,c, or d because each test has its answers swapped to be in different places! Were in this together guys so always help each other out! A few tips to try to avoid jiskha so you can get more confidence in test taking is take notes and try not to search up a answer, instead search up why something happens or how to do the type of math formula, good luck this 8th grade year guys!
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