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

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2. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
That it is negative
Only temperature of the water bath
Electrons from anode and battery


3. The visible spectrum ranges from ____ to _____
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
400 to 700 nm
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
External components of the circuit


4. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Cathode; anode
6.02 x 10^23 ions/mol
Vertically; perpendicular to all surfaces
The reaction between the base and water


5. Beta decay is the emission of what? How do you know what it is the emission of?
The current is the same
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
A positron or electron; when atomic number goes up you know an electron has been emitted
Positron because this is known as positron decay/electron capture


6. What is the equation for work done?
B = pVg; density
W = F(displacement)
Sp^3
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles


7. What is sublimation?
E = (kq)/r^2
3+
Electron shell number
Going from solid to gas phase


8. What is the amt of energy that a frictional force generates?
Colligative: it depends on the number of solute molecules in a given volume of water
Force times the distance over which the force acts
Voltage
W = F(displacement)


9. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
It can absorb light that lets other electrons fill those orbitals
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Where an event took place
Polar


10. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
The nucleus gains a proton and no neutrons
Decreasing potential energy
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
Its twice that distance


11. 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
That of static friction; there is a net accelerating force on the block once it starts to slide
B = pVg; density
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure


12. 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 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
That of static friction; there is a net accelerating force on the block once it starts to slide
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


13. The Ksp for a substance of AaBb is what?
Strong acid and strong base/ weak acid and weak base
[A]^a[B]^b
From peak to peak
The current is the same


14. 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?
Decreasing potential energy
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
400 to 700 nm
Energy


15. Is the work done by air resistance - positive or negative?
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Mg
Energy
Negative


16. What is a metathesis rxn?
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
Gravity
Positron because this is known as positron decay/electron capture
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect


17. What is the equation for pressure?
Density (gravitational constant) height
It can absorb light that lets other electrons fill those orbitals
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
T = 2pi/angular velocity; v/r


18. 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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19. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Helium; 4
Voltage
Liquid displaced by that object
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


20. What is the relationship between P and n in PV=nRT?
Momentum
Alkali metals = first column
They are directly proportional
The reaction between the base and water


21. 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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22. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
It decreases; the work done by the gas in expanding decreases its internal energy
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
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


23. The range of pH in which a color change takes place in a titration depends on what?
Zero
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Mg
When HIn is turned into In- - which is dependent upon the pKa of the indicator


24. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
Colligative: it depends on the number of solute molecules in a given volume of water
The path is longer on the inclined plane so it will take object longer to reach the bottom
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
Positive


25. What is Newton's Universal Law of Gravitation?
Yes - if the particle's trail is equidistant between two adjacent anodes
F = GMm/r^2
The lowest one
A constant force on a mass causes it to have a constant acceleration


26. The temperature of a metal will not increase above its melting point until what?
Zero
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
T = (2h/g)^1/2; distance = vt
Total internal reflection


27. 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
Gravity
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


28. If the equation says that the E^o has (-) voltage when being reduced - but it is being oxidized in the problem - what does the voltage then become?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
The current is the same
The particle's charge and the magnitude of the electric field
(+)


29. If asked which electron configuration of an element is most stable which one do you choose?
The regular one
A constant force on a mass causes it to have a constant acceleration
[A]^a[B]^b
Positron because this is known as positron decay/electron capture


30. How many mL is in one liter?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
1000
In the presence of a base
Red


31. The boiling point of a solution is what type of property? Which means is depends only on what?
Colligative; the number of solute particles present
A saturated solution in which the aqueous ions are in equilibrium with the solid
One that has more solute particles per liter of solution
The path is longer on the inclined plane so it will take object longer to reach the bottom


32. What type of acid and base would produce a pH closest to 7?
T = 2pi/angular velocity; v/r
From peak to peak
Strong acid and strong base/ weak acid and weak base
It decreases; the work done by the gas in expanding decreases its internal energy


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

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34. A pendulum moves under the influence of what?
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
Gravity
Add them together
Voltage


35. What is the spin projection quantum 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
+/- 1/2
[S][2S]^2 = 4S^3
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles


36. What are the units of an electric field?
Energy
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
400 to 700 nm
V/m or N/C


37. In Bohr model of atom when is energy emitted?
The element's mass number
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
When electron falls from high energy to low energy level
A constant force on a mass causes it to have a constant acceleration


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

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39. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
E = (kq)/r^2
[A]^a[B]^b
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)


40. Equivalent mass is what?
They must balance
Add them together
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
Total internal reflection


41. How do you figure out the literature Ksp value of a compound?
A saturated solution in which the aqueous ions are in equilibrium with the solid
At an equal distance behind it as the object is in front of the mirror
Decreasing potential energy
B = pVg; density


42. Hydrogen has what kind of standard oxidation or reduction potential?
Zero
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
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Helium; 4


43. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
Pascal (N*m^2)
That they are catalysts in the rxn because they react with the substrate and are reformed
The lowest whole number ratio of moles of each element in a mole of a cmpd
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous


44. If temperature arises during a mixture what can you conclude about the enthalpy?
Mass number stays the same but the atomic number increases
When all the external forces = zero
That it is negative
In the presence of a base


45. What kind of charge is on Al?
3+
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
Where an event took place
A salt and water


46. What is conserved in an inellastic collision?
Momentum
A salt and water
One mole of electric charge
0 Hz because they are traveling side by side at the same speed


47. Mechanical waves in a medium fxn to transport what?
Strong acid and strong base/ weak acid and weak base
Going from solid to gas phase
Energy
It's weight = mg; h


48. What is Avagadro's number regarding ions/mol?
6.02 x 10^23 ions/mol
You look at what is being oxidized and reduced in the problem
They do not differ
Attractive molecular forces acting between material surfaces in contact


49. 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?
7 always!!!
It will be reduced the voltage produced by the resistor which means IR; E- IR
(+)
Decreasing potential energy


50. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
6.02 x 10^23 ions/mol
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
NO; reduction-oxidation
B = pVg; density