Analysis of Sweets. Is it possible to find any of the substances(Starch,Gelatin, Sucrose/Glucose) in any of the different candy samples?
IB Chemistry: Analysis of Sweets
IB
Name: klassa andersen
16/9-11
Design:
Aim: Is it possible to find any of the substances(Starch,Gelatin, Sucrose/Glucose) in any of the different candy samples?
Variables: None
Independent variable: None
Controlled variable: None
Dependant variable: None
Materials:
- Heater
- Copper Sulfate (CuSO4 )(0,1M)
- Sodium Hydroxide (NaOH) (2 M)
- Beaker (25 ml)
- Waterglass
- Three different Candy samples(2: Gumdrops,4:Cola Straps,9:Winegum)
- Iodide
- Water (H2O)
Method:
- Cut the three different samples of candy into small pieces
- Put small pieces of the different samples of the candies into three watchglasses
- Put small amounts of H2O into the three watchglasses
- Put small amounts of iodide into the three different samples containing small amounts of H2O
- If the samples turn black then Starch can found in the samples of Candy.
- To Find if there is any gelatin in any of the three samples of candy, you first cut the three different samples of candy into small pieces
- Put the three different samples into three different beakers
- Add small amounts of CuSO4 and then NaOH
- Check to see if the samples have a purple color which means that the sample of the candy contains gelatin
- To find out if the any of the three different samples of candy contain any Sucrose/glucose you put the samples containing gelatin into a heater
- If any of the three different samples have a yellowish color, then the contain Sucrose/glucose.