Ques:Q: When water particles become hot enough to overcome the force of attraction between them, what happens to the water? Read this paragraph and choose the correct option from the provided answers: If water gets hot enough, it starts to boil. Bubbles of water vapor form in boiling water. This happens as particles of liquid water gain enough energy to completely overcome the force of attraction between them and change to the gaseous state. The bubbles rise through the water and escape from the pot as steam. Choices: - it freezes - it pools - it evaporates - it boils A:

Ans:it boils
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Ques:Q: What is the type of mining called when materials are removed along a strip? Read this paragraph and choose the correct option from the provided answers: Other methods of surface mining include strip mining, placer mining, and dredging. Strip mining is like open pit mining but with material removed along a strip. A quarry is a type of open-pit mine that produces rocks and minerals that are used to make buildings and roads. Choices: - surface mining - edge mining - pit mining - strip mining A:

Ans:strip mining
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Ques:Q: Graphite is a form of elemental carbon what is another form? Read this paragraph and choose the correct option from the provided answers: Graphite and diamond are two forms of elemental carbon. Write the equilibrium equation between these two forms in two different ways. Choices: - carbonite - magnite - iron - diamond A:

Ans:diamond
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Ques:Q: The temperature at which all molecular motion has ceased is called what? Read this paragraph and choose the correct option from the provided answers: Making Connections: Absolute Zero What is absolute zero? Absolute zero is the temperature at which all molecular motion has ceased. The concept of absolute zero arises from the behavior of gases. Figure 13.9 shows how the pressure of gases at a constant volume decreases as temperature decreases. Various scientists have noted that the pressures of gases extrapolate to zero at the same temperature, 273.15C . This extrapolation implies that there is a lowest temperature. This temperature is called absolute zero. Today we know that most gases first liquefy and then freeze, and it is not actually possible to reach absolute zero. The numerical value of absolute zero temperature is 273.15C or 0 K. Choices: - 0 degrees kelvin - stopping point - 0 degrees celcius - absolute zero A:

Ans:
absolute zero
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