2. Methods

 2. Methods 

2.1 Equipment List 

 Beakers 

Quantity- 8

   

Stopwatch 

Quantity- 1

    

Food grade Bicarbonate

Quantity- 10g

    

White Vinegar

Quantity- 10g 

   

Salt

Quantity- 10g

    

Sugar

Quantity- 10g

    

Distilled water( control)

Quantity- 50ml

    

Tap water

Quantity- 50ml

    

Monosodium Glutamate( MSG)

Quantity- 10

    

Slices of apples 

Quantity- 8

Knife 

Quantity- 1

    

Cutting Board 

Quantity- 1

     
Live colour app

Masking tape

Quantity- 1

Permanent marker

Quantity- 1

2.2 Diagrams of experimental setup  

Table 2: R,G and B index for apples soaked in different kitchen condiments

R, G and B index for apples soaked in different chemicals

2.3 Procedures

1. Label the eight  beakers with the solutions that we are going to pour inside the beaker for easy identification, with one being labelled as control to serve as the control setup.

2.  Pour the 10g of condiments into the 8 beakers( 50ml for the distilled water and the tap water, and nothing for the control beaker)

3.  Pour 50ml of warm distilled water into the beakers with condiments, before mixing until the condiments are dissolved completely.

4   Leave the beakers with condiments to cool until its room temperature.

5.  When the solutions are at room temperature, gently lowers the apple slices into the beakers.

6.  Take  a stopwatch and record after a period of 30 minutes.  

7.  Use the Live colour app to measure the RGB value of the apple. 

8.  Repeat  steps two to seven two more times . 

2.4 Data Analysis

12. Tabulate the RGB data for each piece of the apples as shown below. 

14. Plot a graph using the red value derived from the Live Colour App. 

2.5 Risk Assessment and Management 

Risk	Assessment	Management
Students may accidentally swallow or come in contact with  the slices of apples that are in contact with the chemicals.	Medium	Students must avoid eating and drinking  at all times in the laboratory.
Knives are involved in this experiment so there is a potential danger that students may cut themselves.	Medium	Use gloves or ask for adult supervision.
Students may drop the beaker and there would be glass shards on the floor leading to students getting cut by those glass shards.	Low	Approach the experiment with caution. If it happens, then ask for the teacher-in-charge’s help to clean the mess.
The used condiments in the experiment might not be disposed properly. Thus, someone would  get injured from it.	Low	Use caution and ensure that no excessive amounts of condiments are consumed by anyone.
Legend	Low	Unlikely and no severe harm
	Medium	Likely but not severe OR Unlikely but severe
	High	Likely and Severe harm