题目内容
The next video segment looks at chemical structures of minerals. Before we begin, what do you think is the weight difference between an element and its ion?
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When boiling green peas the colour can be preserved by the addition of a chemical agent to the cooking water.a) Which one of the following chemicals will preserve the colour of the peas?
A person’s diet affects their energy levels. Which of the following foods is most likely to promote sleepiness?
Ariel is making his favourite sweetened ice tea. Instead of using sugar he decides to replace the 200g of sugar (774 calories) from his recipe with a 1g (rounded to the nearest whole number) of sugar substitute to achieve a drink of the same sweetness. In doing so he reduces the caloric value of his sweetened ice tea by 770 calories. What sweetener did Ariel use?
Frank is writing a cookbook. He makes a recipe for a low calorie muffin in which he substitutes 300g of white cane sugar (1,161 calories) with 1g of a sweetener to make a product of the same sweetness. The end results are muffins that contain zero calories from sugar or sweetener. What sweetener did Frank use?
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