Ques: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: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: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: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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