Physics
Physics, 31.08.2019 13:00, samangelzrose3576

Water is a very unique substance because it can exist in all three phases of matter (solid, liquid, gas) within the normal temperature ranges found on earth.
when one observes the phase of matter of water, one observes a property of matter.

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Physics, 02.07.2019 00:50, alexianunez15
The different phases of matter exist at different density levels. which of the following lists the phases in order from most dense to least dense for most materials? a. solid > liquid > gas b. liquid > gas > solid c. liquid > solid > gas d. gas > liquid > solid
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Physics, 12.07.2019 04:00, NehemiahPate2006
Use the phase diagram above to answer the questions below .( remember that standard pressure is 1.00 atm and it’s used to find normal phase change temperatures.) 1: in which state/phase of matter is this substance at -10 °c and a pressure of 0.50 atm? 2: what phase change occurs as the substance at 0.75 atm is heated from 0°c to 25°c 3: the normal boiling point of a substance is the temperature at standard pressure (1 atm) in which a substance changes from the liquid to the gas/vapor state . what is the normal boiling point of this substance ? 4: the point on the phase diagram where the separation line between liquid and gas ends and the distinction between the liquid phase and gas phase disappears is called the . at this point ,no amount of pressure will cause the substance to condense into a liquid 5: what is the temperature and pressure of the triple point? what phases are in equilibrium at this point ? 6: what phase change occurs as the substance at 0°c has its pressure dropped from 0.50 atm to 0.25 atm?
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Chemistry, 31.08.2019 11:50, s27511583
Which of the following statements is true of the critical temperature of a pure substance? a. the critical temperature is the temperature above which the liquid phase of a pure substance can exist. b. the critical temperature is the temperature above which the liquid phase of a pure substance cannot exist. c. the critical temperature is the temperature below which the liquid phase of a pure substance cannot exist. d. the critical temperature is the temperature at which all three phases can coexist. e. the critical temperature is the temperature at which the pure substance reaches, but cannot go beyond, the critical pressure. can someone explain this one?
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Water is a very unique substance because it can exist in all three phases of matter (solid, liquid,...

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