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DSST Physical Sciences2

Subjects : dsst, science

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is the law of conservation of linear momentum?
180 degrees; when there is half a wave distance in phase between two waves
It will increase as well because they are directly related - only if pressure is kept constant
Mv = mv
You look at how many electrons are needed to reduce one cmpd and that number will be put in front of that cmpd and you do the same thing that's oxidized as well: review #38 on test #11

2. Mechanical waves in a medium fxn to transport what?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Energy
Add them together
A salt and water

3. What is one faraday equal to?
That of static friction; there is a net accelerating force on the block once it starts to slide
Decreasing potential energy
Attractive molecular forces acting between material surfaces in contact
One mole of electric charge

4. When the source of a sound is flying away from you what happens to the wavelengths from peak to peak?
The element's mass number
F = GMm/r^2
Red
They increase because you hear a lower frequency

5. Hydrogen has what kind of standard oxidation or reduction potential?
Momentum
Isolating an atom from minerals by decomposing the minerals with an electric current
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Zero

6. F in the Young's modulus equation can also equal what? What is E?

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7. Can a charged particle be detected by two anodes?

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8. What is newton's second law?
The element's mass number
Positive
Gravity
A constant force on a mass causes it to have a constant acceleration

9. The range of pH in which a color change takes place in a titration depends on what?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
How strong a base is
When HIn is turned into In- - which is dependent upon the pKa of the indicator
The lowest one

10. If you are told to find the maximum number of NiCo3 that can form how do you do that?

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11. A saturated solution of KNO3 means what? If you add salt that has any of these two ions what will happen? What is this called?
The mass of an acid that yields one mole of H ions or the mass of a base that reacts with one mole of H ions
[S][2S]^2 = 4S^3
When electron falls from high energy to low energy level
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

12. What is Newton's Universal Law of Gravitation?
F = GMm/r^2
1000
That it is negative
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

13. Can a catalyst shift equilibrium?
They do not differ
The regular one
Mag and direction
No - it increases the speed at which the rxn reaches that equilibrium

14. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
Strong acid and strong base/ weak acid and weak base
Colligative: it depends on the number of solute molecules in a given volume of water
No - it increases the speed at which the rxn reaches that equilibrium
Mass number stays the same but the atomic number increases

15. Melting occurs at what type of temperature? Why?
You see how many moles of each are present and the one with the least is limiting; calculate how many grams/moles of a product will be made
Constant to overcome the heat of fusion (solid to liquid state)
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Mag and direction

16. What direction do gravity and bouyancy work? What direction does water pressure work?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
It can also equal 'mg'; the compressive strength of a substance
Electrons from anode and battery
Vertically; perpendicular to all surfaces

17. In a healthy person standing at rest - a comparison of arterial blood pressure measured in the arm with that in the leg - shows what about the differences between these pressures?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
A current; a magnetic field into a curved path; the charge and mass of the incoming particle and can be effectively used to distinguish different species of particles from one another
Colligative: it depends on the number of solute molecules in a given volume of water
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

18. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Strong acid and strong base/ weak acid and weak base
It minimizes the reabsorption of the light because the light must exit the scintillator to reach the photomultiplier where it is converted to an electrical pulse
That of static friction; there is a net accelerating force on the block once it starts to slide

19. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
[A]^a[B]^b
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
You look at how many electrons are needed to reduce one cmpd and that number will be put in front of that cmpd and you do the same thing that's oxidized as well: review #38 on test #11
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

20. Kb is the equilibrium constant for what?
The reaction between the base and water
Faraday/electrons
(density[p])(volume)
Positron emission

21. What is the equation for a period (T)? What is the equation for angular velocity?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
They do not differ
T = 2pi/angular velocity; v/r
Energy

22. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
Pascal (N*m^2)
A saturated solution in which the aqueous ions are in equilibrium with the solid
How much energy is needed to raise one gram of a substance one degree celcius; it tells that you need more energy to increase temperature
It decreases; the work done by the gas in expanding decreases its internal energy

23. What is sublimation?
Going from solid to gas phase
The buoyant force on it; W = mg = pVg
Pascal (N*m^2)
Its intensity in the spectrum

24. If asked which electron configuration of an element is most stable which one do you choose?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
You look at what is being oxidized and reduced in the problem
The regular one
It minimizes the reabsorption of the light because the light must exit the scintillator to reach the photomultiplier where it is converted to an electrical pulse

25. In order to guarantee a non-zero spin how many electrons are needed?
An odd number
Faraday/electrons
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
When you have central atom with six ions on it

26. What kind of charge is on Al?
3+
Positron because this is known as positron decay/electron capture
Ability to locate an event in space
One mole of electric charge

27. How do you figure out the literature Ksp value of a compound?
F = GMm/r^2
A saturated solution in which the aqueous ions are in equilibrium with the solid
How much energy is needed to raise one gram of a substance one degree celcius; it tells that you need more energy to increase temperature
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

28. The square root of 10^anything is equal to what?
Cathode; anode
Half of the exponent
7 always!!!
Negative

29. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Neutrons; atomic number
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2

30. So if you have a voltage of 1/4V it will be reduced by what? Thus what will be the equation for the terminal voltage?
Total internal reflection
It will be reduced the voltage produced by the resistor which means IR; E- IR
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
W = F(displacement)

31. A pendulum moves under the influence of what?
1000
Positive
Gravity
When all the external forces = zero

32. Considering the answer in the last slide - what kind of a solution would have a lower freezing pt?
P = IV
One that has more solute particles per liter of solution
+/- 1/2
It will take longer to melt if the water bath is only at 90 degrees rather than 100 degrees because at 100 degrees the temperature is hotter and thus it will melt faster than at 90 degrees

33. What is Avagadro's number regarding ions/mol?
6.02 x 10^23 ions/mol
(density[p])(volume)
Only temperature of the water bath
Gravity

34. The basicity constant Kb measures what?
How strong a base is
A positron or electron; when atomic number goes up you know an electron has been emitted
Gravity
It is a rxn where you mix aqueous solutions of cations and anions and the ionic cmpds switch the ions with which they were paired

35. If the standard potential for a rxn is negative when it is being reduced (thus a negative reduction potential) that means that the resulting atom has what?
It has a positive oxidation potential so it is easily oxidized
Its momentum is zero because velocity is zero; zero because of conservation of momentum
It's weight = mg; h
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

36. How do you find wavelength if you known distance from adjacent crests and troughs?
Its twice that distance
W = F(displacement)
Only temperature of the water bath
Density (gravitational constant) height

37. What is the magnitude of the electric field produced by a point charge?
Force times the distance over which the force acts
Constant to overcome the heat of fusion (solid to liquid state)
The regular one
E = (kq)/r^2

38. Friction is caused by what?
That it is negative
Attractive molecular forces acting between material surfaces in contact
Momentum
[S][2S]^2 = 4S^3

39. Beta decay is the same as what?
1000
Positron because this is known as positron decay/electron capture
Positron emission
Strong acid and strong base/ weak acid and weak base

40. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
They do not differ
A positron or electron; when atomic number goes up you know an electron has been emitted
-l to +l
Its intensity in the spectrum

41. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
That they are catalysts in the rxn because they react with the substrate and are reformed
Force times the distance over which the force acts
The buoyant force on it; W = mg = pVg
The path is longer on the inclined plane so it will take object longer to reach the bottom

42. If you have circuit elements in parallel what is the same across them?
Its intensity in the spectrum
Voltage
External components of the circuit
Ability to locate an event in space

43. Equivalent mass is what?
(density[p])(volume)
The mass of an acid that yields one mole of H ions or the mass of a base that reacts with one mole of H ions
Force times the distance over which the force acts
It minimizes the reabsorption of the light because the light must exit the scintillator to reach the photomultiplier where it is converted to an electrical pulse

44. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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45. What is the doppler equation for wavelength and frequency?
Attractive molecular forces acting between material surfaces in contact
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Cathode; anode

46. What does spatial resolution refer to?
Positron because this is known as positron decay/electron capture
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Ability to locate an event in space
Decreasing potential energy

47. Light can be carried along a distance within a transparent material by means of what?
The current is the same
A positron or electron; when atomic number goes up you know an electron has been emitted
Total internal reflection
Electron shell number

48. When a falling mass is at terminal speed - what is the power expended by the air resistance?
P = F(v) = mg(v -terminal)
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Mass number stays the same but the atomic number increases
Add them together

49. What is the unit for Young's Modulus?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
W = F(displacement)
0 Hz because they are traveling side by side at the same speed
Pascal (N*m^2)

50. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
E = (kq)/r^2
H = negative and S = positive
Ability to locate an event in space
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)