changes of state and internal energy stores Flashcards

heating system will change energy stored within the system and raise its temp to produce change of state

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1
Q

to change a substances state, you need a change in the energy in the _________ of the particles

A

internal energy stores

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2
Q

how do you transfer energy to internal energy stores

A

by heating

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3
Q

a substance’s energy in its internal energy store is the

A

total energy of all particles in that substance

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4
Q

when you heat a substance, you transfer energy to the particles of the substance- so you will always ____ the energy in the internal energy store of the substance

A

increase

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5
Q

how can the temperature of a substance be measured (2)

A

kelvin scale (K)
degrees celsius

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6
Q

If a substance is changing its state, its temperature will

A

stay constant

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7
Q

for water at standard atmospheric pressure, what is boiling and melting point at *C

A

b- 100
m- 0

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8
Q

as substances cool, energy is transferred ____ from them so they ___ energy from their _____

A

away
lose
internal energy store

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9
Q

condensation happens at the same temperature as

A

boiling

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10
Q

the forces between particles become ____ as particles move closer together

A

stronger

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11
Q

condensation is

A

gas to liquid

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12
Q

solidification is

A

liquid to solid

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13
Q

melting is

A

solid to liquid

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14
Q

boiling is

A

liquid to gas

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