Which test solution requires heat to trigger a reaction? (meaning, there will be no change in color UNLESS you add heat)Group of answer choicesStarch (Iodine)Sugar (Benedict's solution)Salt (silver nitrate)

odine tests for the presence of starch. Iodine is yellow, but turns blue/black when exposed to starch. You will add iodine to a tube of water (the test solution). If there is NOT starch in the test solution, what color should the solution be?Group of answer choicesBlue/blackYellowPink

We use chemical reagents in food tests to identify the presence of biological molecule.Identify the correct colour change you would expect, when a substance tests positively for the presence of glucose after Benedict's solution is added.Blue to purpleOrange-brown to blue-blackClear to cloudy emulsionBlue to brick redI DON'T KNOWSUBMIT ANSWER

Topic(s): The Speed Of A ReactionWhen solution A and solution B are mixed they react slowly to form iodine.Starch solution is added to the mixture to act as an indicator.When a certain amount of iodine is made there is a sudden colour change to blue-black.Plan an investigation to find the effect of temperature on the rate of the reaction between solution Aand solution BYou are provided with solution A, solution B. starch solution and common laboratory apparatus.

Which conditions must be present for Benedict’s test to be conducted properly? Check all that apply.Check All That ApplyHigh pHHigh pHHeatHeatNo lightNo lightLow temperatureLow temperatureHigh concentrations of reagents

Which of the following is a test for an aldehyde and Silver is a product?Group of answer choicesReduction testBennedict's testTollens' testSaponification test