CAVA Chem s2d02 1.02 Behavior of Gasses
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Matter exists in several states: solid, liquid, [...], and plasma | Matter exists in several states: solid, liquid, gas, and plasma
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| gases have mass, but they have no definite [...] or volume | gases have mass, but they have no definite shape or volume
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| gas molecules collide with the walls of the balloon and exert force. We call that force [...]. | gas molecules collide with the walls of the balloon and exert force. We call that force pressure.
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| Pressure is defined as [...] per unit area. | Pressure is defined as force per unit area.
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| The metric system's unit of pressure is the [...]. | The metric system's unit of pressure is the pascal.
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| Because atmospheric pressure was first measured with a mercury barometer, you may see pressure measured in units of millimeters of [...]. | Because atmospheric pressure was first measured with a mercury barometer, you may see pressure measured in units of millimeters of mercury.
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| [...] are compressible | Gases are compressible
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| Another behavior of a gas is that the volume changes directly with [...]. | Another behavior of a gas is that the volume changes directly with temperature.
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| As you change the amount of gas in a fixed volume, you change the [...]. | As you change the amount of gas in a fixed volume, you change the pressure.
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| [...] molecules can move from one side of a room to the other. | Gas molecules can move from one side of a room to the other.
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| a net movement of the molecules from an area of higher concentration (the onion) to an area of lower concentration (the opposite side of the room) is called [...]. | a net movement of the molecules from an area of higher concentration (the onion) to an area of lower concentration (the opposite side of the room) is called diffusion.
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| [...] and [...] diffuse (spread out). | gasses and liquids diffuse.
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| Chemists chose a standardized temperature and pressure of 273 K ([...]°C) and 100 kPa (1 atm) | Chemists chose a standardized temperature and pressure of 273 K (0°C) and 100 kPa (1 atm)
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| When the particles [...] with something, they transfer energy. | When the particles collide with something, they transfer energy.
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| Particles of a gas (or of a liquid or solid) are in constant [...]. | Particles of a gas (or of a liquid or solid) are in constant motion.
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| kinetic energy = [...] energy | kinetic energy = movement energy
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| The kinetic energy is proportional to the [...]. | The kinetic energy is proportional to the temperature.
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| Gases are made of empty [...] and of particles, atoms or molecules. | Gases are made of empty space and of particles, atoms or molecules.
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| Because gases are mostly empty space, they are [-ible]. | Because gases are mostly empty space, they are compressible.
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| Matter exists in several states: [...], liquid, gas, and plasma | Matter exists in several states: solid, liquid, gas, and plasma
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| Matter exists in several states: solid, [...], gas, and plasma | Matter exists in several states: solid, liquid, gas, and plasma
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| gases have mass, but they have no definite shape or [...] | gases have mass, but they have no definite shape or volume
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| Pressure is defined as force per unit [...]. | Pressure is defined as force per unit area.
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| Chemists chose a standardized temperature and pressure of 273 K (0°C) and [...] kPa (1 atm) | Chemists chose a standardized temperature and pressure of 273 K (0°C) and 100 kPa (1 atm)
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| Chemists chose a standardized temperature and pressure of 273 K (0°C) and 100 kPa ([...] atm) | Chemists chose a standardized temperature and pressure of 273 K (0°C) and 100 kPa (1 atm)
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