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Antioxidant (6)
Science
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Antioxidant (6)
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Procedure to study the effects of different types of solution on the oxidation of apples (2)
Cut an apple into five equal slices
Procedure to study the effects of different types of solution on the oxidation of apples (3)
Put one of the apple slices in a Petri dish as a control
Procedure to study the effects of different types of solution on the oxidation of apples (4)
Use a forceps to soak each apple slice into sugar solution, lime juice, sodium bicarbonate solution and common salt solution
Procedure to study the effects of different types of solution on the oxidation of apples (5)
After 1 minute, place the apple slices from the four solutions into a Petri dish and leave them to be exposed to air for 15 minutes
Procedure to study the effects of different types of solution on the oxidation of apples (6)
After 15 minutes, observe the changes to the apple slices in the four types of solution with the apple not soaked in any solution
Manipulated variables for an experiment studying the effect of various types of solutions on the oxidation of apples
The type of solution
Responding variables for an experiment studying the effect of various types of solutions on the oxidation of apples
Colour changes on apple slices
Constant variables for an experiment studying the effect of various types of solutions on the oxidation of apples
- Surrounding temperature - Size of apple slice
Examples of foods containing beta carotene (4)
Pumpkin
Examples of foods containing beta carotene (5)
Apricot
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Antioxidant (6)
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