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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.
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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 newton's second law?
1000
Mv = mv
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
A constant force on a mass causes it to have a constant acceleration

2. If the standard potential for a rxn is negative when it is being reduced (thus a negative reduction potential) that means that the resulting atom has what?
It has a positive oxidation potential so it is easily oxidized
At an equal distance behind it as the object is in front of the mirror
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
0 Hz because they are traveling side by side at the same speed

3. In Bohr model of atom when is energy emitted?
External components of the circuit
F =ma and F= qE
In the presence of a base
When electron falls from high energy to low energy level

4. The range of pH in which a color change takes place in a titration depends on what?
7 always!!!
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Decreasing potential energy
Strong acid and strong base/ weak acid and weak base

5. What is sublimation?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Decreasing potential energy
V/m or N/C
Going from solid to gas phase

6. 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
(density[p])(volume)
At an equal distance behind it as the object is in front of the mirror
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

7. How do you balance redox rxns?

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8. Half-sine wave shape is what kind of wavelength with regards to length?
400 to 700 nm
L = wavelength/2 so L= (wavelength)(2)
That it is negative
E = (kq)/r^2

9. What kind of geometry is octahedral?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
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
Where an event took place
When you have central atom with six ions on it

10. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
The force along the board to the normal force
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Mag and direction
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

11. Terminal voltage is provided to what?
External components of the circuit
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Mag and direction

12. The freezing point of an aqueous solution is what kind of property? What does this mean?
That it is negative
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
-l to +l
Colligative: it depends on the number of solute molecules in a given volume of water

13. What kind of metals react violently with water?
Alkali metals = first column
E = (kq)/r^2
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Gravity

14. In PV=nRT - if temp increases what will happen to volume?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
It decreases; the work done by the gas in expanding decreases its internal energy
It will increase as well because they are directly related - only if pressure is kept constant
Sp^3

15. The number of incident photons on the cathode affect what?
Zero
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
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The number of electrons emitted

16. F in the Young's modulus equation can also equal what? What is E?

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17. What is a metathesis rxn?
Alkali metals = first column
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
A constant force on a mass causes it to have a constant acceleration
When you have central atom with six ions on it

18. 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?
Only temperature of the water bath
H = negative and S = positive
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
(+)

19. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
-l to +l
Cathode; anode
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Sp^3

20. 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?
Positive
That of static friction; there is a net accelerating force on the block once it starts to slide
H has a small atomic radius
Add them together

21. A saturated solution of KNO3 means what? If you add salt that has any of these two ions what will happen? What is this called?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
H = negative and S = positive
Ability to locate an event in space

22. Neither N2 or O2 have a permanent what? What does this mean?
6.02 x 10^23 ions/mol
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
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
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R

23. Strength of dispersion force increases with what?
Ability to locate an event in space
400 to 700 nm
The volume of the ice cube or whatever it is
Ease of polarizability of the molecule and thus increasing molecular weight of mass

24. What is usually conserved over oscillation periods?
When electron falls from high energy to low energy level
Energy
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14

25. For a given flow rate - the speed of fluid flow is inversely proportional to what?
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
Only temperature of the water bath
A salt and water
The cross-sectional area through which the fluid flows

26. What is weight equal to?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Mg
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The buoyant force on it; W = mg = pVg

27. What is the equation for a period (T)? What is the equation for angular velocity?
T = 2pi/angular velocity; v/r
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Going from solid to gas phase
NO; reduction-oxidation

28. Isotopes have diff number of ______ but same what?
Colligative: it depends on the number of solute molecules in a given volume of water
Neutrons; atomic number
Accelerated by a higher voltage between the cathode and anode
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

29. How do you find moles of a substance when you are given faradays and electrons?
Faraday/electrons
When electron falls from high energy to low energy level
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
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

30. In general what is formed by an acid-base rxn?
It can absorb light that lets other electrons fill those orbitals
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
Positive
A salt and water

31. In radioactive decay the atomic number (A) and mass number (Z) must what?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
W = F(displacement)
They must balance

32. Is the work done by air resistance - positive or negative?
Negative
Cathode; anode
An odd number
Going from solid to gas phase

33. How many mL is in one liter?
The cross-sectional area through which the fluid flows
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
1000
F = GMm/r^2

34. If you are given a table of substances and are told to find which two show effect of molecular weight on melting point alone - which two substances should you look for?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
That of static friction; there is a net accelerating force on the block once it starts to slide
-l to +l
Half of the exponent

35. What does spatial resolution refer to?
A salt and water
It will be reduced the voltage produced by the resistor which means IR; E- IR
Density (gravitational constant) height
Ability to locate an event in space

36. What is Avagadro's number regarding ions/mol?
0 Hz because they are traveling side by side at the same speed
6.02 x 10^23 ions/mol
Cathode; anode
Alkali metals = first column

37. What is the principal quantum number (n)?
Electron shell number
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
They do not differ
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

38. When something is falling what is the force acting on it? Thus what would be the work done?

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39. Beta decay is the emission of what? How do you know what it is the emission of?
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
Only temperature of the water bath
A positron or electron; when atomic number goes up you know an electron has been emitted
Yes - if the particle's trail is equidistant between two adjacent anodes

40. The visible spectrum ranges from ____ to _____
P = IV
400 to 700 nm
The regular one
A constant force on a mass causes it to have a constant acceleration

41. What happens if an atom undergoes positron decay or electron capture?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
How strong a base is
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
(density[p])(volume)

42. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Cathode; anode
Its twice that distance
The regular one
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

43. The volume of an object is equal to water?
Liquid displaced by that object
The cross-sectional area through which the fluid flows
External components of the circuit
3+

44. 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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45. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
Density (gravitational constant) height
NO; reduction-oxidation
400 to 700 nm
Constant to overcome the heat of fusion (solid to liquid state)

46. The concentration of OH and H30 ions are approximately equal at what pH?
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
7 always!!!
Mg
L = wavelength/2 so L= (wavelength)(2)

47. Always remember that velocity has ____ and ____
NO; reduction-oxidation
Mag and direction
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
Total internal reflection

48. Why are bonds between H and another atom shorter compared to most?
When you have central atom with six ions on it
H has a small atomic radius
It will increase as well because they are directly related - only if pressure is kept constant
Sp^3

49. 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
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
T = (2h/g)^1/2; distance = vt
T = 2pi/angular velocity; v/r

50. Mechanical waves in a medium fxn to transport what?
Its intensity in the spectrum
The particle's charge and the magnitude of the electric field
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
Energy