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Chemistry > Chem KPT > Flashcards

Chem KPT Flashcards

1
Q

What is the Kinetic Particle Theory?

A

all matter consists of tiny discrete molecules in constant state of motion.

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2
Q

What is the arrangement of solid?

A

very closely packed in an orderly manner

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3
Q

Attractive forces of a solid

A

Vert strong

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4
Q

Movement of a solid

A

Vibrate around in their fixed postition

Cannot move freely

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5
Q

Kinetic energy

A

Very low

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6
Q

Arrangement of a liquid

A

Closely packed in an orderly manner

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7
Q

Attractive forces of a liquid

A

Strong

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8
Q

Movement of particles in a liquid

A

Move about randomly at slow speed within the liquid only, slipping and sliding over one another

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9
Q

Kinetic energy of a liquid

A

low

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10
Q

Arrangement of a gas

A

far apart and randomly arranged

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11
Q

Attractive forces of gas

A

Weak

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12
Q

Movement of a gas

A

Move about rapidly and randomly at high speed in all directions

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13
Q

Kinetic energy of gas

A

high

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14
Q

What happens to particles when there’s a increase in temperature

A
  1. Kinetic energy

When temp increase. ave k.e of the particles increase

Movement of particles

Particles then absorb the heat energy and move at a faster speed.

  1. Arrangement of particles

Remains unchanged

  1. strength of attraction

remains unchanged

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15
Q

What happens to particles when there is a decrease in temperature

A
  1. Kinetic energy of particles

When temp decrease, ave. k.e of paticles decrease

  1. Movement of particles

Particles release heat energy and move at a slower speed

  1. Arrange of particles

Unchanged

  1. Strength of attraction btw particles

unchanged

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16
Q 
During melting  (s to l)
boiling (s to g) and sublimation (s to g)
A
  1. Kinetic energy of particles

Temperature remains constant at the melting/ boiling point until state change is complete avem KE no change

  1. Strength of attraction btw particpes

Heat energy is absorbed to overcome intermolecular forces of attraction btw particles

  1. Movement of particles

Particles change TYPE OF MOVEMENT but remain at the SAME SPEED AS KINETIC ENERGY IS CONSTANT

  1. Arrangement of particles

Particles move further apart and become more irregularly arranged

17
Q

During freezing, condensation and deposition ( g to s)

A
  1. Kinetic energy of particles

Temperature remains constant at the freezing/ condensation point until state change is complete, ave KE is the same

  1. Strength of attraction btw particles

energy is released to the surroundings during condensation/freezing, as forces of attraction btw particles get stronger (ENERGY RELEASED COMPENSATES ENERGY REMOVED W COOLING PROCESS)

  1. Movement of particles

Particle change their type of movment but same speed as ave k.e is the same

  1. arrangement of particles

particles move closer tgt and become more regularly arranged.

18
Q

formula for rate of diffusion of gas

A

k
____

square molecular mass of gasmolecular mass the bigger no. × no. of molecules

19
Q

Temp effect on diffusion

A

Higher temp = ____
molecules move around faster as they hv greater k.e and particles diffuse faster as compared to ___

NOTE IF ABOVE RTP OR LOWER

20
Q

Porous pot eg structure/ anyth comparing mass

A

Relative mass of A is 28 ans that of B is 16, thus B moves faster, B diffused faster than A can diffuse out. gas pressure in the pot increases and pushes water lvl down

If tube:
same except lower RMM diffuses slower and take more time to reach the pt

21
Q

If same RMM?

A

RMM of __ is ___, same as ___, thus gases w same molecular mass diffuse at the same rate.

22
Q

Condensation and Freezing Graphs

A

always straight up and CONSTANT AT MELTING PT/FREEZING PT for pure substances

23
Q

Order of stuff

A
  1. Kinetic energy (ave)
  2. Strength of Attraction
  3. Movement of particles ( speed and type)
  4. Arrangement of particles

Chemistry (8 decks)

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