Food Energy and Temperature Changes

Mr. Wilson conducts an experiment to measure the chemical energy in rice cake, biscuit, and cheese by burning them and observing the temperature change in water. The experiment shows that cheese has the most chemical energy, followed by biscuit, and rice cake has the least. The differences in energy are attributed to the varying nutrient compositions of the foods.

What is the initial temperature of the water used in the experiment?

• 25 degrees

• 15 degrees

• 20 degrees

• 18 degrees

Which food item was tested first in the experiment?

• Biscuit

• Cheese

• Rice cake

• Bread

How much did the temperature of the water increase after burning the rice cake?

• 10 degrees

• 5 degrees

• 20 degrees

• 15 degrees

What additional nutrients does the biscuit contain compared to the rice cake?

• Vitamins and minerals

• Water and salt

• Sugar and fat

• Protein and fiber

What was the temperature change observed with the biscuit?

• 15 degrees

• 25 degrees

• 10 degrees

• 20 degrees

What is the primary nutrient in cheese that contributes to its high energy content?

• Fiber

• Fat

• Protein

• Carbohydrate

What challenge was faced during the cheese experiment?

• Cheese melted and fell off

• Cheese did not burn

• Cheese was too small

• Cheese absorbed water

What was the final temperature change observed with the cheese?

• 20 degrees

• 25 degrees

• 27 degrees

• 30 degrees

Which food item had the least chemical energy content?

• Rice cake

• Bread

• Biscuit

• Cheese

What nutrient is primarily responsible for the high energy content in cheese?

• Carbohydrate

• Fat

• Fiber

• Protein