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DSST Physical Sciences2

Subjects : dsst, science

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 newton's second law?
They increase because you hear a lower frequency
A constant force on a mass causes it to have a constant acceleration
You look at what is being oxidized and reduced in the problem
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous

2. The equivalence pt is what part of the titration curve? Thus looking at the range of change between the pH values along this part of the graph can tell you what?

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3. If you have circuit elements in parallel what is the same across them?
Positron emission
Voltage
Yes - if the particle's trail is equidistant between two adjacent anodes
The cross-sectional area through which the fluid flows

4. If both weight and bouyant force are dependent on g - that makes g independent of what?
Sp^3
The volume of the ice cube or whatever it is
It has a positive oxidation potential so it is easily oxidized
That it is negative

5. What happens to a negatively charged particle put between two parallel plates?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
They must balance
The reaction between the base and water

6. When does red litmus paper turn blue?
F =ma and F= qE
A constant force on a mass causes it to have a constant acceleration
In the presence of a base
That it is negative

7. The total pressure of a solution is what? Give example.
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
A function of the total number of molecules; if there is one mol of CO2 for every 2 mol of H20 then H20 is 2/3 the total pressure
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
H has a small atomic radius

8. The closer the spacing of the anode wire - the better one can specify what?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
The density of the water and volume of the lead object
1000
Where an event took place

9. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
Cathode; anode
Only temperature of the water bath
Negative
Liquid displaced by that object

10. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
NO; reduction-oxidation
Sp^3
It will increase as well because they are directly related - only if pressure is kept constant
Look at how many times smaller the H concentration becomes with relation to rate law: if rate law says [H] is second order: ((10^-2)^2/(10^-1)^2 = 10^-2 and then times that answer by the original rate

11. What are the units of an electric field?
They are directly proportional
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
The regular one
V/m or N/C

12. When you are trying to calculate a galvanic cell's emf - what do you look at?
-l to +l
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
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
You look at what is being oxidized and reduced in the problem

13. When the source of a sound is flying away from you what happens to the wavelengths from peak to peak?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
The density of the water and volume of the lead object
V/m or N/C
They increase because you hear a lower frequency

14. A plane mirror produces an image where?
At an equal distance behind it as the object is in front of the mirror
Positive
Accelerated by a higher voltage between the cathode and anode
T = 2pi/angular velocity; v/r

15. A floating ice cube implies that it's weight is balanced by what?
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
The buoyant force on it; W = mg = pVg
Alkali metals = first column
Ease of polarizability of the molecule and thus increasing molecular weight of mass

16. The concentration of OH and H30 ions are approximately equal at what pH?
7 always!!!
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
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Add them together

17. What is different between an inclined plane and free fall?
The path is longer on the inclined plane so it will take object longer to reach the bottom
Mg
T = (2h/g)^1/2; distance = vt
The force along the board to the normal force

18. What direction do gravity and bouyancy work? What direction does water pressure work?
External components of the circuit
Vertically; perpendicular to all surfaces
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Alkali metals = first column

19. 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?
You look at what is being oxidized and reduced in the problem
They are directly proportional
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

20. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
Total internal reflection
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
[S][2S]^2 = 4S^3
It's weight = mg; h

21. What happens if an atom undergoes positron decay or electron capture?
Liquid displaced by that object
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
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

22. What is conserved in an inellastic collision?
You look at what is being oxidized and reduced in the problem
Half of the exponent
Momentum
W = F(displacement)

23. If asked which electron configuration of an element is most stable which one do you choose?
The regular one
Total internal reflection
It can absorb light that lets other electrons fill those orbitals
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14

24. The coefficient of static friction is the ratio of what?
They are directly proportional
Zero
The force along the board to the normal force
Cathode; anode

25. Why does light travel slower in an optically dense medium than through a vacuum?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Density (gravitational constant) height
F =ma and F= qE
From peak to peak

26. Can a catalyst shift equilibrium?
No - it increases the speed at which the rxn reaches that equilibrium
Electrons from anode and battery
Going from solid to gas phase
Polar

27. The electrical force on a particle depends on what?

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28. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
A constant force on a mass causes it to have a constant acceleration
Mass number stays the same but the atomic number increases

29. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
It decreases; the work done by the gas in expanding decreases its internal energy
400 to 700 nm
Its twice that distance
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus

30. How do you find length of time something is in flight? How do you find distance it traveled?
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
From peak to peak
T = (2h/g)^1/2; distance = vt
The buoyant force on it; W = mg = pVg

31. Equivalent mass is what?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
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
Decreasing potential energy
An odd number

32. What color is above 656 nm?
From peak to peak
At an equal distance behind it as the object is in front of the mirror
Red
Mass number stays the same but the atomic number increases

33. How should the period of a waveform be calculated?
From peak to peak
That they are catalysts in the rxn because they react with the substrate and are reformed
Energy
Polar

34. How do you figure out the literature Ksp value of a compound?
P = F(v) = mg(v -terminal)
A saturated solution in which the aqueous ions are in equilibrium with the solid
[S][2S]^2 = 4S^3
P = IV

35. The probability of an X-ray emission event at a given wavelength is measured by what?
Its intensity in the spectrum
A salt and water
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

36. What is one faraday equal to?
One mole of electric charge
1000
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
Alkali metals = first column

37. Isotopes have diff number of ______ but same what?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Electrons from anode and battery
Neutrons; atomic number

38. When is a body in translational equilibrium?
Quantum number that dictates the shape of an orbital; how many angular nodes are present? Spherical shape with no angular nodes thus you have 0 for angular momentum quantum number
Energy
When all the external forces = zero
It can absorb light that lets other electrons fill those orbitals

39. What kind of geometry is octahedral?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Momentum
Mg
When you have central atom with six ions on it

40. The Ksp for a substance of AaBb is what?
[A]^a[B]^b
It will increase as well because they are directly related - only if pressure is kept constant
Look at how many times smaller the H concentration becomes with relation to rate law: if rate law says [H] is second order: ((10^-2)^2/(10^-1)^2 = 10^-2 and then times that answer by the original rate
P = IV

41. What does spatial resolution refer to?
Ability to locate an event in space
They do not differ
Mv = mv
A saturated solution in which the aqueous ions are in equilibrium with the solid

42. In order to guarantee a non-zero spin how many electrons are needed?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
An odd number
The density of the water and volume of the lead object
Decreasing potential energy

43. If temperature arises during a mixture what can you conclude about the enthalpy?
That it is negative
+/- 1/2
Cathode; anode
The part where it's straight almost up before it curves to plateau at new pH; it can tell you what indicator you could use to detect the equivalence point

44. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
One that has more solute particles per liter of solution
Vertically; perpendicular to all surfaces
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

45. A nearsighted person has what type of focal length? Thus what do we do to correct this?
The reaction between the base and water
Add them together
Electrons from anode and battery
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

46. What is usually conserved over oscillation periods?
Toward the side with more gaseous molecules; towards the side that doesn't give off as much heat (remember heat is given off when molecules are formed and thus (-) enthalpy)
3+
Liquid displaced by that object
Energy

47. How do you find moles of a substance when you are given faradays and electrons?
F = GMm/r^2
Yes - if the particle's trail is equidistant between two adjacent anodes
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Faraday/electrons

48. What energy conversion describes best what takes place in a battery-powered resistive circuit?
The nucleus gains a proton and no neutrons
One mole of electric charge
F =ma and F= qE
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors

49. Why are bonds between H and another atom shorter compared to most?
H has a small atomic radius
Its twice that distance
One that has more solute particles per liter of solution
They are directly proportional

50. When you are trying to find the buyoancy force of water on a lead object what density do you use in the equation B = pVg? what volume?
B = pVg; density
The density of the water and volume of the lead object
3+
The part where it's straight almost up before it curves to plateau at new pH; it can tell you what indicator you could use to detect the equivalence point