Chemistry ch4
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Last updated 12:55 AM on 10/13/22
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38 Terms
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How is a solid different from a liquid ?
The solids particles are rigid, they don't flow
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Phase change from solid to liquid
melting
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phase change from liquid to solid
freezing
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phase change from solid to gas
sublimation
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phase change from gas to solid
deposition/desublimation
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how are the properties of solids like liquids'?
they reflect the attraction and arrangement of their particles
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what is the melting/freezing point for ionic solids?
HIGH
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ionic solids
opposite charges (positive+negative) {alex+layla}
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what is the attraction strength for ionic solids?
STRONG
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what is the attraction strength for molecular solids?
WEAK
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Melting point for molecular solids
LOW
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what elements are involved with ionic solids?
metals+nonmetals
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what elements are involved with molecular solids?
nonmetals+nonmetals
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most solids form a 3D pattern called what?
a crystal lattice
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Unit cell
the smallest group of particles within a crystal that retains the geometric shape of the crystal
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amorphous solids(glass, rubber)
lacking form
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Allotropes(carbon, phosphorus)
two or more molecular forms in the same element and physical state
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Which compound has the higher melting point
silver chloride (AgCl) or water (H20)?
silver chloride (AgCl) or water (H20)?
silver chloride, because it is an ionic solid the melting point is higher.
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which compound has the higher melting point
silicone dioxide (SiO2) or Iron chloride (FeCl)?
silicone dioxide (SiO2) or Iron chloride (FeCl)?
Iron chloride, because it is a ionic solid so the melting point is higher
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what phases are in equilibrium at a substances melting point?
solid and liquid
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List the states of matter correctly in order of increasing average kinetic energy
Solid, liquid, gas.
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mol(e)
a set of number of particles in a substance
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what is the gas law that has no constants, but combines all three variables?
combined gas law
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what gas law has gas constant, and number of moles?
ideal gas law
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what gas law has volume constant, and is proportional?
gay-lussacs
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what gas law has temperature constant, and is inversely proportional?
boyle's law
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what is the gas law that has pressure constant and is proportional ?
Charles' law
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What are the two major assumptions that are needed for a gas to be ideal? There what can be assumes about all gases?
1. particles take up no volume
2. particles don't interact
no gases are ideal
2. particles don't interact
no gases are ideal
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how is a liquid different than a gas?
liquid particles are connected together, and are not easily compressible
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A liquid is characterized by
the attractions that hold it together
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volatility
describes how easily a substance will vaporize
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What is room/normal pressure?
1 atm
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barometer
measure the atmosphere pressure
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manometer
measures differences between pressure
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why is pressure lower at higher altitudes?
Gravity prevents less air particles to go to higher altitudes, so there is lower pressure
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what is pressure?
force per area
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what is temperature?
amount of kinetic energy of a particle
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what is volume?
amounts of space something takes up
Note 
Flashcards (45)