Phase equilibrium between the gaseous and liquid states describes the situation when Question 7 options: no more molecules leave the gas and enter the liquid. no more molecules leave the liquid and enter the gas. the liquid is boiling. None of the other choices is correct. as many molecules go from liquid to gas as from gas to liquid. In a city high in the mountains, such as Denver, CO, water boils Question 8 options: at a higher temperature than it does at sea level in the morning but at a lower temperature than it does at sea level the rest of the day. at a higher temperature than it does at sea level. at a lower temperature than it does at sea level in the morning but at a higher temperature than it does at sea level the rest of the day. at a lower temperature than it does at sea level. at the same temperature as it does at sea level. When both the pressure and the absolute temperature of an ideal gas are increased each by a factor of two, the volume occupied by the gas will Question 9 options: increase by a factor of two. not change. increase by a factor of four. decrease by a factor of two. decrease by a factor of four.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Question 7 options:
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no more molecules leave the gas and enter the liquid. |
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no more molecules leave the liquid and enter the gas. |
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the liquid is boiling. |
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None of the other choices is correct. |
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as many molecules go from liquid to gas as from gas to liquid. |
Question 8 options:
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at a higher temperature than it does at sea level in the morning but at a lower temperature than it does at sea level the rest of the day. |
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at a higher temperature than it does at sea level. |
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at a lower temperature than it does at sea level in the morning but at a higher temperature than it does at sea level the rest of the day. |
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at a lower temperature than it does at sea level. |
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at the same temperature as it does at sea level. |
Question 9 options:
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increase by a factor of two. |
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not change. |
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increase by a factor of four. |
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decrease by a factor of two. |
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decrease by a factor of four. |
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