DSST Physical Sciences2

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 principal quantum number (n)?
P = IV
Electron shell number
The cross-sectional area through which the fluid flows
They increase because you hear a lower frequency


2. What is weight equal to?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Mg
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens


3. What would the force be of a block on a pulley? What would be its displacement?

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4. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
7 always!!!
Electrons from anode and battery
Mass number stays the same but the atomic number increases
Faraday/electrons


5. When you are trying to calculate a galvanic cell's emf - what do you look at?
A salt and water
Accelerated by a higher voltage between the cathode and anode
You look at what is being oxidized and reduced in the problem
Colligative; the number of solute particles present


6. The temperature of a metal will not increase above its melting point until what?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
One that has more solute particles per liter of solution
V/m or N/C
You look at what is being oxidized and reduced in the problem


7. What is newton's second law?
A constant force on a mass causes it to have a constant acceleration
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Yes - if the particle's trail is equidistant between two adjacent anodes
Accelerated by a higher voltage between the cathode and anode


8. What is the magnetic quantum number?
[S][2S]^2 = 4S^3
Sp^3
-l to +l
Electron shell number


9. Equivalent mass is what?
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
The lowest one
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
The density of the water and volume of the lead object


10. How many mL is in one liter?
1000
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
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


11. Beta decay is the same as what?
Mass number stays the same but the atomic number increases
Positron emission
Yes - if the particle's trail is equidistant between two adjacent anodes
It's weight = mg; the work would be the weight times the distance fell


12. What is the relationship between P and n in PV=nRT?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
They increase because you hear a lower frequency
Add them together
They are directly proportional


13. 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?
The density of the water and volume of the lead object
The volume of the ice cube or whatever it is
400 to 700 nm
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed


14. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
F =ma and F= qE
The force along the board to the normal force
The lowest one
Add them together


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

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

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17. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
A constant force on a mass causes it to have a constant acceleration
(+)
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Momentum


18. 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?
(density[p])(volume)
Density (gravitational constant) height
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
L = wavelength/2 so L= (wavelength)(2)


19. Beta decay is the emission of what? How do you know what it is the emission of?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
A positron or electron; when atomic number goes up you know an electron has been emitted
They increase because you hear a lower frequency


20. The free energy change (G) must be negative when what?
From peak to peak
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
H = negative and S = positive
Gravity


21. What does spatial resolution refer to?
The reaction between the base and water
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Ability to locate an event in space
6.02 x 10^23 ions/mol


22. What is different between an inclined plane and free fall?
A salt and water
They must balance
The path is longer on the inclined plane so it will take object longer to reach the bottom
Polar


23. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
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
NO; reduction-oxidation
The nucleus gains a proton and no neutrons
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


24. When is a body in translational equilibrium?
A positron or electron; when atomic number goes up you know an electron has been emitted
When all the external forces = zero
Gravity
+/- 1/2


25. How do you find moles of a substance when you are given faradays and electrons?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Helium; 4
Faraday/electrons
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


26. The freezing point of an aqueous solution is what kind of property? What does this mean?
It decreases; the work done by the gas in expanding decreases its internal energy
Zero
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Colligative: it depends on the number of solute molecules in a given volume of water


27. A nearsighted person has what type of focal length? Thus what do we do to correct this?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Going from solid to gas phase
B = pVg; density
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2


28. The coefficient of kinetic friction is always lower than what? Therefore what?
One mole of electric charge
E = (kq)/r^2
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
That of static friction; there is a net accelerating force on the block once it starts to slide


29. What is the angular momentum quantum number (l)? It is the same as what? What does an S orbital appear to look like? What would it's (l) be?
They increase because you hear a lower frequency
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
Going from solid to gas phase
Look at the reactants and see which atom is being reduced - since it accepts the electron readily and is reduced we can assume it has the highest electron affinity


30. If temperature arises during a mixture what can you conclude about the enthalpy?
Colligative; the number of solute particles present
The force along the board to the normal force
That it is negative
Isolating an atom from minerals by decomposing the minerals with an electric current


31. What is the equation for bouyant force? What is p?
W = F(displacement)
Going from solid to gas phase
B = pVg; density
The path is longer on the inclined plane so it will take object longer to reach the bottom


32. What are the three separate module for tensile stress - shear stress - and compression/expansion?

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33. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Strong acid and strong base/ weak acid and weak base
Where an event took place
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Cathode; anode


34. The boiling point of a solution is what type of property? Which means is depends only on what?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
+/- 1/2
Colligative; the number of solute particles present
The density of the water and volume of the lead object


35. The total pressure of a solution is what? Give example.
Add them together
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
Energy
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous


36. How do you find length of time something is in flight? How do you find distance it traveled?
T = (2h/g)^1/2; distance = vt
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
The lowest whole number ratio of moles of each element in a mole of a cmpd
400 to 700 nm


37. The phase difference corresponding to a half wave is what? When do you get destructive interference?
180 degrees; when there is half a wave distance in phase between two waves
The nucleus gains a proton and no neutrons
Colligative; the number of solute particles present
It experiences a constant electric force of qE and will thus accelerate towards the positive plate


38. 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
(+)
A salt and water
Look at the reactants and see which atom is being reduced - since it accepts the electron readily and is reduced we can assume it has the highest electron affinity


39. Nuclear masses can be approximated from what?

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40. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
A positron or electron; when atomic number goes up you know an electron has been emitted
When all the external forces = zero
[A]^a[B]^b
They do not differ


41. The electrons emitted from cathode are replaced with what?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
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
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
Electrons from anode and battery


42. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
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
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
A salt and water
The density of the water and volume of the lead object


43. If melting pt of a substance is 80 degrees - then what is the diff in time the substance melts when it is either placed in 100 degree test tube and 90 degree test tube?
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
External components of the circuit
Energy
Its momentum is zero because velocity is zero; zero because of conservation of momentum


44. Is the work done by air resistance - positive or negative?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Constant to overcome the heat of fusion (solid to liquid state)
Vertically; perpendicular to all surfaces
Negative


45. If you have an alcohol with OH on the end and then another cmpd with an O in the middle but no H - what is different between the bonds they can make with water?

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46. Half-sine wave shape is what kind of wavelength with regards to length?
L = wavelength/2 so L= (wavelength)(2)
The cross-sectional area through which the fluid flows
Gravity
Mass number stays the same but the atomic number increases


47. Always remember that velocity has ____ and ____
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
In the presence of a base
Constant to overcome the heat of fusion (solid to liquid state)
Mag and direction


48. So if you are given an equation and it gives you the E^o for both side equations seen in the big equation - what do you do with them?
A positron or electron; when atomic number goes up you know an electron has been emitted
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
The density of the water and volume of the lead object
Add them together


49. What is the spin projection quantum number?
+/- 1/2
Red
Liquid displaced by that object
The nucleus gains a proton and no neutrons


50. How do you find 'g' from Newton's law of gravity?
E = (kq)/r^2
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
The number of electrons emitted