C3:Particle model of matter Flashcards

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1
Q

how do you calculate density (kg/m^3)

A

mass(kg) / volume(m^3)

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2
Q

How do you find the density of an irregul\r shape

A

step 1: put object onto the balance and record the mass
step 2:fill up a eureka can with water
step 4:put object inside of the eureka can and measure the displaced water in the measuring cylinder.

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3
Q

what is a system

A

an object or a group of objects

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4
Q

what is internal energy

A

the sum of kinetic and potential energy of all the particles that make up the system

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5
Q

how do you calculate na change in temperature (j)

A

mass x specific heat capacity(j/kg celsius) x temperature change (celsius)

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6
Q

what is specific heat capacity

A

amount of energy required to raise the temperature of one kg pf the substance by one degree celsius

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7
Q

what is latent heat

A

energy needed for a substance to change state

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8
Q

how do you calculate energy for a change of state (j)

A

mass x specific latent heat(j/kg)

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9
Q

what is internal energy

A

sum of kinetic energy and potential energy of all particles in a substance

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10
Q

how do you calculate latent heat (j)

A

mass(kg) x specififc latent heat (j/kg)

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11
Q

what happens when you heat up a gas

A

increase particles kenetic energy which means they collide more frequently and with greater force
this causes an increase i pressure

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12
Q
A
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