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 equation for bouyant force? What is p?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
B = pVg; density
Zero
The volume of the ice cube or whatever it is


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


3. 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?
The nucleus gains a proton and no neutrons
Strong acid and strong base/ weak acid and weak base
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
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


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


5. What is conserved in an inellastic collision?
Colligative: it depends on the number of solute molecules in a given volume of water
Momentum
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
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)


6. Neither N2 or O2 have a permanent what? What does this mean?
180 degrees; when there is half a wave distance in phase between two waves
You look at what is being oxidized and reduced in the problem
That of static friction; there is a net accelerating force on the block once it starts to slide
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


7. Heat from friction comes from what?
The lowest whole number ratio of moles of each element in a mole of a cmpd
In the presence of a base
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Decreasing potential energy


8. What is the relationship between P and n in PV=nRT?
They are directly proportional
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
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
A saturated solution in which the aqueous ions are in equilibrium with the solid


9. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Cathode; anode
It decreases; the work done by the gas in expanding decreases its internal energy
Going from solid to gas phase
F =ma and F= qE


10. 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?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


11. What kind of geometry is octahedral?
When you have central atom with six ions on it
The current is the same
[S][2S]^2 = 4S^3
Mass number stays the same but the atomic number increases


12. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
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
Energy
That it is negative
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2


13. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
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
P = F(v) = mg(v -terminal)
Half of the exponent
Helium; 4


14. What direction do gravity and bouyancy work? What direction does water pressure work?
When all the external forces = zero
Momentum
Vertically; perpendicular to all surfaces
The volume of the ice cube or whatever it is


15. Mechanical waves in a medium fxn to transport what?
Yes - if the particle's trail is equidistant between two adjacent anodes
Energy
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
From peak to peak


16. The closer the spacing of the anode wire - the better one can specify what?
Force times the distance over which the force acts
In the presence of a base
When all the external forces = zero
Where an event took place


17. Always remember that velocity has ____ and ____
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Mag and direction
The particle's charge and the magnitude of the electric field
F = GMm/r^2


18. 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?
It will be reduced the voltage produced by the resistor which means IR; E- IR
Colligative; the number of solute particles present
6.02 x 10^23 ions/mol
Total internal reflection


19. How do you find the equiv capacitance of capacitors in series and parallel? What about if you are trying to find equivalent resistance?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Accelerated by a higher voltage between the cathode and anode
Zero
They must balance


20. In order to increase the kinetic energy of electrons - they must be what?
The number of electrons emitted
They do not differ
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
Accelerated by a higher voltage between the cathode and anode


21. Acetic acid is a ______ solvent
Energy
It's weight = mg; the work would be the weight times the distance fell
External components of the circuit
Polar


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


23. What does the empirical formula show?
The number of electrons emitted
The lowest whole number ratio of moles of each element in a mole of a cmpd
That of static friction; there is a net accelerating force on the block once it starts to slide
When you have central atom with six ions on it


24. What is the doppler equation for wavelength and frequency?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Density (gravitational constant) height
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
A constant force on a mass causes it to have a constant acceleration


25. What is the spin projection quantum number?
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
The nucleus gains a proton and no neutrons
+/- 1/2
Isolating an atom from minerals by decomposing the minerals with an electric current


26. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
Mg
It can absorb light that lets other electrons fill those orbitals
Its twice that distance
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)


27. If both weight and bouyant force are dependent on g - that makes g independent of what?
Positive
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
The volume of the ice cube or whatever it is
They increase because you hear a lower frequency


28. The number of incident photons on the cathode affect what?
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
The number of electrons emitted
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
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


29. In order to guarantee a non-zero spin how many electrons are needed?
An odd number
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
It's weight = mg; the work would be the weight times the distance fell
Yes - if the particle's trail is equidistant between two adjacent anodes


30. Equivalent mass is what?
It will be reduced the voltage produced by the resistor which means IR; E- IR
The reaction between the base and water
Its intensity in the spectrum
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


31. 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?
Going from solid to gas phase
The regular one
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio


32. The freezing point of an aqueous solution is what kind of property? What does this mean?
(+)
Faraday/electrons
Decreasing potential energy
Colligative: it depends on the number of solute molecules in a given volume of water


33. In general what is formed by an acid-base rxn?
NO; reduction-oxidation
A salt and water
At an equal distance behind it as the object is in front of the mirror
Energy


34. Why are bonds between H and another atom shorter compared to most?
At an equal distance behind it as the object is in front of the mirror
Going from solid to gas phase
H has a small atomic radius
Yes - if the particle's trail is equidistant between two adjacent anodes


35. What kind of charge is on Al?
[S][2S]^2 = 4S^3
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
3+


36. How many mL is in one liter?
1000
A saturated solution in which the aqueous ions are in equilibrium with the solid
They do not differ
Polar


37. If you have circuit elements in parallel what is the same across them?
Mass number stays the same but the atomic number increases
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Its intensity in the spectrum
Voltage


38. A floating ice cube implies that it's weight is balanced by what?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
The buoyant force on it; W = mg = pVg
Cathode; anode
Going from solid to gas phase


39. In a rxn - how do you figure out which atom has the highest electron affinity?
Energy
Voltage
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
They increase because you hear a lower frequency


40. How do you find specific gravity of an object?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
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
They do not differ


41. The coefficient of static friction is the ratio of what?
How strong a base is
The force along the board to the normal force
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
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


42. What is Newton's Universal Law of Gravitation?
F = GMm/r^2
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Electron shell number
It can absorb light that lets other electrons fill those orbitals


43. Can a catalyst shift equilibrium?
No - it increases the speed at which the rxn reaches that equilibrium
F =ma and F= qE
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
That of static friction; there is a net accelerating force on the block once it starts to slide


44. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
[S][2S]^2 = 4S^3
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
You look at what is being oxidized and reduced in the problem
Its intensity in the spectrum


45. A plane mirror produces an image where?
At an equal distance behind it as the object is in front of the mirror
The cross-sectional area through which the fluid flows
The lowest whole number ratio of moles of each element in a mole of a cmpd
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


46. How do you balance redox rxns?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


47. What is weight equal to?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The reaction between the base and water
Mg
Helium; 4


48. What is Avagadro's number regarding ions/mol?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
6.02 x 10^23 ions/mol
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The path is longer on the inclined plane so it will take object longer to reach the bottom


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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


50. Is the work done by air resistance - positive or negative?
Negative
Helium; 4
Cathode; anode
They increase because you hear a lower frequency