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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.
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. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
A salt and water
Attractive molecular forces acting between material surfaces in contact
Total internal reflection
Cathode; anode

2. A nearsighted person has what type of focal length? Thus what do we do to correct this?
V/m or N/C
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Positron because this is known as positron decay/electron capture
When electron falls from high energy to low energy level

3. Friction is caused by what?
Colligative: it depends on the number of solute molecules in a given volume of water
Attractive molecular forces acting between material surfaces in contact
That it is negative
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed

4. 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
Going from solid to gas phase
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Negative

5. 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?
When electron falls from high energy to low energy level
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
Yes - if the particle's trail is equidistant between two adjacent anodes
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

6. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
The force along the board to the normal force
(+)
Positive
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

7. The probability of an X-ray emission event at a given wavelength is measured by what?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
It's weight = mg; the work would be the weight times the distance fell
Its intensity in the spectrum
That of static friction; there is a net accelerating force on the block once it starts to slide

8. What is the equation for pressure?
Neutrons; atomic number
400 to 700 nm
Density (gravitational constant) height
E = (kq)/r^2

9. When a falling mass is at terminal speed - what is the power expended by the air resistance?
Faraday/electrons
P = F(v) = mg(v -terminal)
Ease of polarizability of the molecule and thus increasing molecular weight of mass
The element's mass number

10. 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?
It can also equal 'mg'; the compressive strength of a substance
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
(+)
It will be reduced the voltage produced by the resistor which means IR; E- IR

11. What type of acid and base would produce a pH closest to 7?
Sp^3
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
They increase because you hear a lower frequency
Strong acid and strong base/ weak acid and weak base

12. If you are given density and volume how do you find mass?
Going from solid to gas phase
(density[p])(volume)
No - it increases the speed at which the rxn reaches that equilibrium
How strong a base is

13. 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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14. How do you find wavelength if you known distance from adjacent crests and troughs?
Its twice that distance
The lowest one
[S][2S]^2 = 4S^3
At an equal distance behind it as the object is in front of the mirror

15. Acetic acid is a ______ solvent
Mass number stays the same but the atomic number increases
The density of the water and volume of the lead object
Momentum
Polar

16. What is the equation for bouyant force? What is p?
B = pVg; density
Yes - if the particle's trail is equidistant between two adjacent anodes
-l to +l
It will be reduced the voltage produced by the resistor which means IR; E- IR

17. What kind of metals react violently with water?
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
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
3+
Alkali metals = first column

18. What is the relationship between P and n in PV=nRT?
Positron because this is known as positron decay/electron capture
The buoyant force on it; W = mg = pVg
They are directly proportional
Colligative; the number of solute particles present

19. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
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
They do not differ
The regular one

20. The Ksp for a substance of AaBb is what?
[A]^a[B]^b
(density[p])(volume)
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
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

21. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
Mass number stays the same but the atomic number increases
The buoyant force on it; W = mg = pVg
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
+/- 1/2

22. Always remember that velocity has ____ and ____
Momentum
Constant to overcome the heat of fusion (solid to liquid state)
Mag and direction
The cross-sectional area through which the fluid flows

23. What is usually conserved over oscillation periods?
3+
Energy
A saturated solution in which the aqueous ions are in equilibrium with the solid
Its twice that distance

24. What do electrolytic techniques involve?
They increase because you hear a lower frequency
Isolating an atom from minerals by decomposing the minerals with an electric current
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
One mole of electric charge

25. Kb is the equilibrium constant for what?
At an equal distance behind it as the object is in front of the mirror
Colligative: it depends on the number of solute molecules in a given volume of water
The reaction between the base and water
3+

26. Hydrogen has what kind of standard oxidation or reduction potential?
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
Zero
+/- 1/2
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

27. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
One that has more solute particles per liter of solution
Where an event took place
+/- 1/2
Helium; 4

28. A plane mirror produces an image where?
Neutrons; atomic number
One that has more solute particles per liter of solution
An odd number
At an equal distance behind it as the object is in front of the mirror

29. 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?
Strong acid and strong base/ weak acid and weak base
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Positive
P = F(v) = mg(v -terminal)

30. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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31. If both weight and bouyant force are dependent on g - that makes g independent of what?
The reaction between the base and water
One mole of electric charge
The volume of the ice cube or whatever it is
Electron shell number

32. Terminal voltage is provided to what?
External components of the circuit
The buoyant force on it; W = mg = pVg
Strong acid and strong base/ weak acid and weak base
Sp^3

33. How do you find length of time something is in flight? How do you find distance it traveled?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Attractive molecular forces acting between material surfaces in contact
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
T = (2h/g)^1/2; distance = vt

34. When does red litmus paper turn blue?
In the presence of a base
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
[S][2S]^2 = 4S^3
Gravity

35. In a rxn - how do you figure out which atom has the highest electron affinity?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The element's mass number
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
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

36. When you are trying to calculate a galvanic cell's emf - what do you look at?
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
It has a positive oxidation potential so it is easily oxidized
You look at what is being oxidized and reduced in the problem
L = wavelength/2 so L= (wavelength)(2)

37. What happens to a negatively charged particle put between two parallel plates?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
H = negative and S = positive
The reaction between the base and water
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

38. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
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
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
Zero
How strong a base is

39. In order to guarantee a non-zero spin how many electrons are needed?
When electron falls from high energy to low energy level
An odd number
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
E = (kq)/r^2

40. 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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41. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
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
[A]^a[B]^b
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant

42. What is the equation for work done?
A positron or electron; when atomic number goes up you know an electron has been emitted
Mag and direction
W = F(displacement)
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

43. If you have circuit elements in parallel what is the same across them?
Total internal reflection
Voltage
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c

44. Melting occurs at what type of temperature? Why?
Positive
Constant to overcome the heat of fusion (solid to liquid state)
Vertically; perpendicular to all surfaces
Voltage

45. The number of incident photons on the cathode affect what?
A saturated solution in which the aqueous ions are in equilibrium with the solid
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
-l to +l
The number of electrons emitted

46. Nuclear masses can be approximated from what?

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47. 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
It can absorb light that lets other electrons fill those orbitals
Colligative: it depends on the number of solute molecules in a given volume of water
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water

48. 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
Ability to locate an event in space
Energy
Red

49. Mechanical waves in a medium fxn to transport what?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Energy
Mag and direction
Liquid displaced by that object

50. What color is above 656 nm?
Electron shell number
Electrons from anode and battery
V/m or N/C
Red