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NSTP MCAT > Tutoring - Chem/Phys > Flashcards

Tutoring - Chem/Phys Flashcards

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MCAT flashcards
1
Q

Sqrt 2

A

1.4

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2
Q

Sqrt 3

A

1.7

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3
Q

Sin 30

A

= Sqrt (1) / 2

= Cos 60

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4
Q

Sin 45

A

= Sqrt (2) /2

= Cos 45

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5
Q

Sin 60

A

= Sqrt (3) / 2

= Cos 30

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6
Q

Log 0.01

A

-2

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7
Q

Log 0.10

A

-1

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8
Q

Log 1.0

A

0

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9
Q

Log 10

A

1

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10
Q

Log 100

A

2

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11
Q

Ex:

Log 70

A

~ 1.7

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12
Q

How do you draw vectors?

A

Tip to Tail

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13
Q

Distance

A

Scalar

How much ground and object has covered during its motion

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14
Q

Displacement

A

Vector
How far out of place an object is
Change in overall position

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15
Q

Speed

A

Magnitude (no direction) —> Scalar

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16
Q

Velocity

A

With direction
Change in displacement over time
(m/s)

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17
Q

Acceleration

A

Change in velocity over time

m/s^2

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18
Q

STP

A

0˚C = 273K

1 atm

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19
Q

Standard (Lab) Conditions

A

25˚C = 298K

1 atm

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20
Q

Human Body Temp

A

37˚C = 310K

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21
Q

Fahrenheit to Celcius

A

(˚C x 1.8) + 32 = ˚F

22
Q

1 mol of Gas @ STP

A

= 22.4 L of volume

23
Q

Venturi Effect

A

Larger Radius to Smaller Radius —> Decrease in Pressure

Increase in Flow Rate

24
Q

Balancing Redox Reactions

A
  1. Split into UNbalanced 1/2 reactions
  2. Make sure all NON-oxygen and hydrogen atoms are balanced
  3. Our method to add more oxygens is to add ENTIRE water molecules. Then add your hydrogens on the other side
  4. Balance electrons
  5. Cancel out your electrons to get your final answer
25
Q

Kinetic Molecular Theory

A
  1. Gas particle size is negligible
  2. Random motion w/ elastic collisions
  3. Straight line motion in ALL directions, different speeds
  4. Forces between gas particles are negligible
  5. Average kinetic energy is proportional to temperature
26
Q

Heat

A

Transfer of energy between 2 things

27
Q

Temperature

A

Average Kinetic Energy

28
Q

Graham’s Law of Effusion

A

“Fat kid runs slow”

Heavy molecule —> slow speed

29
Q

Phase Diagrams

A

Holding temperature constant, increasing pressure —> phase change
The temperature and pressure at which a substance is a S, L or G

30
Q

Phase Diagram of Hydrogen

A

Line tilts to the left (negative slope)

31
Q

Colligative Properties

A

Depends on the # of solute particles (not inherent nature

  1. BP elevation
  2. Freezing point depression
  3. Vapor Pressure lowing
  4. Osmotic pressure —> pressure required to STOP the process of osmosis
32
Q

Mole Fraction

A

Moles of solute / TOTAL moles of solution

33
Q

Molarity

A

Moles of solute / LITERS of solution

34
Q

Molality

A

Moles of solute / KG of SOLVENT

35
Q

+Q

A

Heat absorbed by the system

36
Q

-Q

A

Heat released by the system

37
Q

+w

A

Work done on the system

38
Q

-w

A

Word done by the system

39
Q

Delta G

A
  • delta G = Exergonic = spontaneous
    0 delta G = at equilibrium = no net RXN = no net transfer of energy
    + delta G = Endergonic
40
Q

Exergonic Rxns = - delta G

A

At ALL temp: - H , +S
At LOW temp: - H , - S
At HIGH temp: +H, +S

41
Q

Endergonic Rxns = +delta G

A

At ALL temp: +H, -S

42
Q

Gibbs Free Energy Equation

A

Delta G = Delta H - (Temp * Delta S)

43
Q

Specific Gravity

A

= Ratio of object’s density to water’s density

44
Q

Pressure

A

= Force over Area = F/A

= (N/m^2) = Pascal

45
Q

Archimedes principle

A

= upward buoyant force of fluid on an object is fluid density * volume of displaced fluid * gravity = buoyant force

46
Q

Pressure is greater at P2 than P1 because more fluid is pressing down

A

P2 = P1 + pgh

  1. Vertical height difference
  2. Same height = same pressure
  3. Pressure same in all directions

All lines originating at P1 have the same pressure (because they are originating at the same point)

47
Q

Incompressible fluids

A 
f1 = f2  
f= Av
48
Q

Viscosity

A

= thick / sticky

49
Q

Smooth flow

A

= streamline or laminar flow

50
Q

Bernoulli’s Equation for Laminar flow

A

Conditions Required:
•Laminar flow / smooth/ streamline (H2O/blood)
•Negligible viscosity
•Steady flow rate
•Incompressible fluids (usually just liquids)

P1 + 1/2pv^2 + pgh = P2 + 1/2 pv^2 +pgh

51
Q

V efflux

A

= sqrt (2 g D)

  • velocity, not flow rate
  • Cylinder with hole
52
Q

Flow rate

A

= A • v

= Pi(r)^2 • v

NSTP MCAT (18 decks)

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