Chem Ch. 11
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Last updated 2:24 PM on 12/21/22
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24 Terms
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Measures the speed or energy of particles?
Temperature
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Measure of the impact of particles on a surface?
Pressure
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As the pressure inside a container increases, the volume will?
Increase
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As the pressure inside a container decreases, the volume will:
Decrease
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As the pressure outside a container increases, the volume will:
Decrease
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As the pressure outside a container decreases, the volume will:
Increase
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What is effusion?
Escape of gas through an opening
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What is diffusion?
Movement of gas over an area. (Think diffuser)
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Which gases will diffuse faster?
Lighter gases diffuse faster.
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What are the seven diatonic gases?
Hydrogen Gas (H)
Oxygen Gas (O)
Nitrogen Gas (N)
Chlorine Gas (Cl)
Bromine Gas (Br)
Iodine Gas (I)
Fluorine Gas (F)
Oxygen Gas (O)
Nitrogen Gas (N)
Chlorine Gas (Cl)
Bromine Gas (Br)
Iodine Gas (I)
Fluorine Gas (F)
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What are the six properties of gases?
Low density
Ability to flow
Ability to expand to fill a container
Because there is space in between the particles, gases can contract. (No fixed volume)
Effusion- escape of a gas through small opening
Diffusion- movement of gas across a space.
Ability to flow
Ability to expand to fill a container
Because there is space in between the particles, gases can contract. (No fixed volume)
Effusion- escape of a gas through small opening
Diffusion- movement of gas across a space.
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What instrument measures air pressure?
Barometer
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What is absolute zero?
0 Kelvin or -273 Celsius
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Why do gases have low densities?
Because their molecules are very far apart.
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At STP, one mole always occupies what volume?
22\.4 L
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What is an ideal gas?
A gas that assumes perfectly elastic collisions and no attraction between particles.
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What are the 4 main units of pressure in chemistry?
kPa
Atm
mmHg
torr
Atm
mmHg
torr
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Who’s Law is the total pressure is the sum of the partial pressures in a container?
Dalton’s Law
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Where is air pressure least, at sea level or in the clouds?
The clouds. (Less pressure pushing down.)
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Where is air pressure highest, at sea level or in the clouds?
Sea level. (More pressure pushing down.)
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What are the metric units of temperature in chemistry?
Celsius and Kelvin, but always use Kelvin in formulas.
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What is the ability to flow?
Fluidity
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What is the ability to expand?
Expansion
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What is the ability to shrink the volume?
Compression
