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Please help! I need an answer to a question we took in science!?

So I'm a freshman, and today we went to the lab and our lab report was about mystery mixtures and I need to know what it is but I couldn't find out in google so just a few questions:

Does baking soda turn blue with iodine? I'm confused others said red, blue, brown?!

What would you conclude if you tested baking powder in your kitchen and found out it fizzed with vinegar, turned blue with iodine, and did not melt when heated? (Most important question!!)

Please help I really need an answer fast because its due tomorrow and I'm busy and have other things to study

Update:

So baking soda fizzes with vinegar, turns blue with starch so is it the mystery mixture?

Because I have others like sugar corn starch but none of them had the same reaction when added with vinegar, turned blue with iodine and not melting when heated except for baking soda. What about the last question? Please explain it has 10 marks on it and have 6 ppl in my group and I don't want them to get a bad grade as well I'm the group leader so I had to get the paper I care about their grades a lot cuz they do too pls pls pls help!

Update 2:

To make it simpler:

Why does baking soda fizz with vinegar?

Why does baking soda turn blue with iodine?

Why doesn't baking soda melt when heated?

2 Answers

Relevance
  • Anonymous
    8 years ago
    Favorite Answer

    A mystery 'mixture' is the clue. Starch turns blue with iodine and many carbonates fizz with vinegar.

  • 8 years ago

    I agree with the first answer :)xxx

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