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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. The electrical force on a particle depends on what?

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2. Beta decay is the emission of what? How do you know what it is the emission of?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
6.02 x 10^23 ions/mol
A positron or electron; when atomic number goes up you know an electron has been emitted
From peak to peak

3. What is sublimation?
Going from solid to gas phase
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
External components of the circuit
Electron shell number

4. How do you balance redox rxns?

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5. The square root of 10^anything is equal to what?
At an equal distance behind it as the object is in front of the mirror
Half of the exponent
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
It can also equal 'mg'; the compressive strength of a substance

6. 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
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Voltage
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant

7. The probability of an X-ray emission event at a given wavelength is measured by what?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Red
Its intensity in the spectrum
(+)

8. What is the relationship between P and n in PV=nRT?
F = GMm/r^2
The path is longer on the inclined plane so it will take object longer to reach the bottom
They are directly proportional
B = pVg; density

9. 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
At an equal distance behind it as the object is in front of the mirror
NO; reduction-oxidation
Polar

10. How do you find 'g' from Newton's law of gravity?
It can also equal 'mg'; the compressive strength of a substance
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Going from solid to gas phase
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2

11. If asked which electron configuration of an element is most stable which one do you choose?
[A]^a[B]^b
Neutrons; atomic number
Energy
The regular one

12. If both weight and bouyant force are dependent on g - that makes g independent of what?
The volume of the ice cube or whatever it is
B = pVg; density
Its twice that distance
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

13. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
(+)
Faraday/electrons
In the presence of a base
It decreases; the work done by the gas in expanding decreases its internal energy

14. What is the doppler equation for wavelength and frequency?
Helium; 4
It's weight = mg; h
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Voltage

15. What is a metathesis rxn?
Energy
It can absorb light that lets other electrons fill those orbitals
Only temperature of the water bath
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

16. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
Mv = mv
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
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

17. Terminal voltage is provided to what?
Its intensity in the spectrum
Momentum
Negative
External components of the circuit

18. The range of pH in which a color change takes place in a titration depends on what?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
When HIn is turned into In- - which is dependent upon the pKa of the indicator
The path is longer on the inclined plane so it will take object longer to reach the bottom
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)

19. What do electrolytic techniques involve?
Isolating an atom from minerals by decomposing the minerals with an electric current
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Its twice that distance
T = (2h/g)^1/2; distance = vt

20. Beta decay is the same as what?
Positron emission
That they are catalysts in the rxn because they react with the substrate and are reformed
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
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus

21. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
NO; reduction-oxidation
400 to 700 nm
The lowest one
Its momentum is zero because velocity is zero; zero because of conservation of momentum

22. At the moment of explosion of an object - what is its momementum? Why? After an explosion what is the total momentum carried by all the fragments?
H has a small atomic radius
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Electrons from anode and battery

23. Light can be carried along a distance within a transparent material by means of what?
Total internal reflection
V/m or N/C
At an equal distance behind it as the object is in front of the mirror
Neutrons; atomic number

24. Is the work done by air resistance - positive or negative?
P = IV
Negative
Its twice that distance
A salt and water

25. Nuclear masses can be approximated from what?

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26. What type of acid and base would produce a pH closest to 7?
Strong acid and strong base/ weak acid and weak base
Force times the distance over which the force acts
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
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

27. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
An odd number
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
P = IV
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

28. Acetic acid is a ______ solvent
Polar
The particle's charge and the magnitude of the electric field
Yes - if the particle's trail is equidistant between two adjacent anodes
Mag and direction

29. How do you find specific gravity of an object?
180 degrees; when there is half a wave distance in phase between two waves
Mass per unit volume compared to water: so if mass is 15 g and displaces 5g of benzene the ratio of object to liquid mass is 15/5 = 3 and then times 3 by the specific gravity of benzene which is 0.7
Zero
B = pVg; density

30. In general what is formed by an acid-base rxn?
The reaction between the base and water
A salt and water
3+
It can also equal 'mg'; the compressive strength of a substance

31. 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
Negative
E = (kq)/r^2
You look at what is being oxidized and reduced in the problem

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

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33. The boiling point of a solution is what type of property? Which means is depends only on what?
The volume of the ice cube or whatever it is
Electron shell number
Colligative; the number of solute particles present
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

34. In a rxn - how do you figure out which atom has the highest electron affinity?
That of static friction; there is a net accelerating force on the block once it starts to slide
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
It can absorb light that lets other electrons fill those orbitals
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio

35. A plane mirror produces an image where?
At an equal distance behind it as the object is in front of the mirror
Pascal (N*m^2)
Positron emission
Liquid displaced by that object

36. If you are given density and volume how do you find mass?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
(density[p])(volume)
-l to +l
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

37. What direction do gravity and bouyancy work? What direction does water pressure work?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
A salt and water
They increase because you hear a lower frequency
Vertically; perpendicular to all surfaces

38. Mechanical waves in a medium fxn to transport what?
400 to 700 nm
At an equal distance behind it as the object is in front of the mirror
Energy
Liquid displaced by that object

39. What is the spin projection quantum number?
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
+/- 1/2
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Helium; 4

40. The closer the spacing of the anode wire - the better one can specify what?
Constant to overcome the heat of fusion (solid to liquid state)
Where an event took place
Total internal reflection
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

41. In order to increase the kinetic energy of electrons - they must be what?
Red
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
They are directly proportional
Accelerated by a higher voltage between the cathode and anode

42. If the source of sound and the listener are traveling side by side at the same speed - what will the change in freq heard by the listener be?
It will increase as well because they are directly related - only if pressure is kept constant
That of static friction; there is a net accelerating force on the block once it starts to slide
Mag and direction
0 Hz because they are traveling side by side at the same speed

43. What is the law of conservation of linear momentum?
Mv = mv
They must balance
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
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

44. What is the formula for the power supplied by a battery to accelerate an electron beam?
Where an event took place
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Gravity
P = IV

45. The Ksp for a substance of AaBb is what?
3+
In the presence of a base
[A]^a[B]^b
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

46. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
An odd number
The volume of the ice cube or whatever it is
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
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

47. What is Avagadro's number regarding ions/mol?
Cathode; anode
Red
6.02 x 10^23 ions/mol
Zero

48. How many mL is in one liter?
W = F(displacement)
The reaction between the base and water
[S][2S]^2 = 4S^3
1000

49. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
It will increase as well because they are directly related - only if pressure is kept constant
Mag and direction
The nucleus gains a proton and no neutrons

50. In radioactive decay the atomic number (A) and mass number (Z) must what?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Zero
They must balance
A saturated solution in which the aqueous ions are in equilibrium with the solid