Ques:Answer the following question given this paragraph: Polar molecules result from differences in electronegativity of the atoms in the molecule. Q: Polar molecules result from differences in electronegativity of what in the molecule? Choices: - ions - protons - iron - atoms A:

Ans:atoms
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Ques:Answer the following question given this paragraph: Though not particularly beautiful machines, calorimeters are incredibly useful ones. They are used to determine the calories (food energy) in food, as well as the average heat yield from burning various grades of coal and oil. The price of coal is often dependent on the heat yield from samples burned in a calorimeter. Q: What machine is used to determine the calories in food, as well as the average heat yield from burning various grades of coal and oil? Choices: - radio telescope - thermometer - alethiometer - calorimeter A:

Ans:calorimeter
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Ques:Answer the following question given this paragraph: Sugars are simple carbohydrates. Molecules of sugars have relatively few carbon atoms. Glucose (C 6 H 12 O 6 ) is one of the smallest sugar molecules. Plants and some other organisms make glucose in the process of photosynthesis. Living things that cannot make glucose obtain it by consuming plants or these other organisms. Q: Glucose is an example of what simple carboyhydrates with relatively few carbon atoms? Choices: - solvents - mixtures - acids - sugars A:

Ans:sugars
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Ques:Answer the following question given this paragraph: Figure 10.18 The first image shows how helicopters store large amounts of rotational kinetic energy in their blades. This energy must be put into the blades before takeoff and maintained until the end of the flight. The engines do not have enough power to simultaneously provide lift and put significant rotational energy into the blades. The second image shows a helicopter from the Auckland Westpac Rescue Helicopter Service. Over 50,000 lives have been saved since its operations beginning in 1973. Here, a water rescue operation is shown. (credit: 111 Emergency, Flickr). Q: Helicopters store large amounts of rotational energy of what type in their blades? Choices: - magnetic - seismic - thermal - kinetic A:

Ans:
kinetic
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