Question: Jana and Emily used indophenol to test 3 beverages for vitamin C. The number of drops they added to make a 10 milliliters sample of the blue indophenol indicator become colorless are given here: 8 drops of Overly Orange 13 drops of Luscious Lemon 33 drops of Fruitsnap (and it still didn't change color). Why didn't the indophenol change color with Fruitsnap?
Reference answer: Fruitsnap contains little or no vitamin C so Fruitsnap does not change the color of the indophenol.

Student answer: The indophenol did not change color with Fruitsnap because it did not have any vitamin C in it.

Student answer: It did not change color because Fruitsnap has no vitamin C.

Student answer: The indophenol did not change color with the Fruitsnap because the Fruitsnap might not have had vitamin C.

Student answer: Because it does not contain vitamin C in Fruitsnap. It contains only sugar.

Student answer: It was probably concentrated or it could have little or no vitamin C.

Student answer: Probably because they did something wrong and it did not work.

Student answer: Because it does not have a lot of vitamin C.

Student answer: Because it is too bright.

Student answer: Fruitsnap did not change color because it must not have vitamin.

Student answer: Because it did not have any vitamin C.

Student answer: There was either very little or no vitamin C at all in Fruitsnap.

Student answer: It did not change because the Fruitsnap did not have any vitamin C.

Student answer: The indophenol did not change color with Fruitsnap because it did not have vitamin C in it.

Student answer: The fruit snap did not have vitamin C.

Student answer: The indophenol did not change colors because Fruitsnap does not have a high concentration of acid.

Student answer: The indophenol did not change color with Fruitsnap because there was none or very little vitamin C.

Student answer: Because it had no vitamin C.

Student answer: Because Fruitsnap does not have any vitamin C.

Student answer: It did not because it had no vitamin C or a little bit of vitamin C.

Student answer: It did not work because it has no vitamin C.

Student answer: Because it probably had more sugar than vitamin C.

Student answer: Because it does not have vitamin C in it.

Student answer: Because there was no acid in it.

Student answer: Because it does not have as much vitamin C as Overly Orange or Luscious Lemon.

Student answer: Probably because the Fruitsnap does not have very much concentrate.

Student answer: Because Fruitsnap did not have a lot of vitamin C in it.

Student answer: It did not change color to white or clear because it does not have vitamin C.

Student answer: It was not fruit concentrate.

Student answer: It did not have any vitamin C.

Student answer: It did not change color because it has little or no vitamin C.

Student answer: Because Fruitsnap had little or no vitamin C.

Student answer: Probably because they stopped putting indophenol in.

Student answer: There is no vitamin C in the drink.

Student answer: Fruitsnap probably contains no vitamin C.

Student answer: It did not change because it had not much vitamin C, so it would take a lot of drops.

Student answer: It did not have any vitamin C.