Electrical and Chemical Signals. Aim: Does the colour intensity of a drink affect how sweet it tastes?. Any Questions?. Method:. Collect cups, lemonade (of a known sucrose concentration), red food dye, stirring rod and a measuring cylinder.
Aim: Does the colour intensity of a drink affect how sweet it tastes?
7) Get the same person to try all of the drinks A-E, in between each drink they should rinse their mouth out with mineral water.
Then they should put the drinks into the order of which one they think is sweetest (A-E).
Collect the results in a table and repeat the experiment again with the same person 2 more times.
Making sure that you use clean cups each time.
Then get different people to do the same experiment and compare the different results.
Ensure that no-one shares the same cup, cups are clean and that the equipment used has not been used for any other experiments.
How did you make your experiment valid?
How would you carry out an investigation to investigate the effect of smell on taste?
Collect cups, lemonade (of a known sucrose concentration), blindfold, sugar, stirring rod and a measuring cylinder.
Measure out 50ml of lemonade into a measuring cylinder.
Label the containers A-E.
To each bottle add a different amount of sugar.
Stir the different lemonade/sugar solutions to ensure an even distribution.
Ensure that the person tasting the drink does not see the preparation of the drink.
Blindfold a person.
Get the person to smell a cup of one of the drinks, then taste it.
Get the person to rank the drinks in order of sweetness.
One hundred volunteers were chosen to complete this task. The results are shown in the table. The remainder of the volunteers were unable to detect a difference in the sweetness of the drinks.
One hundred volunteers were chosen to identify flavours of drinks. The results are shown in the table.
scientific principles to help you explain
why being able to see may have affected
peoples sense of taste?
What does your investigation tell you about the senses of sight and taste?
How could you make an experiment looking at how sight affects taste, reliable and valid?
What are the advantages and disadvantages of adding artificial food colourings to foods?