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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. What does spatial resolution refer to?
Its intensity in the spectrum
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
From peak to peak
Ability to locate an event in space

2. The boiling point of a solution is what type of property? Which means is depends only on what?
Energy
Colligative; the number of solute particles present
Attractive molecular forces acting between material surfaces in contact
It will be reduced the voltage produced by the resistor which means IR; E- IR

3. How do you find length of time something is in flight? How do you find distance it traveled?
Energy
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
T = (2h/g)^1/2; distance = vt
[S][2S]^2 = 4S^3

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

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5. Isotopes have diff number of ______ but same what?
Neutrons; atomic number
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
That they are catalysts in the rxn because they react with the substrate and are reformed
The nucleus gains a proton and no neutrons

6. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
-l to +l
Zero
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
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c

7. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
Faraday/electrons
Positive
It's weight = mg; h
They do not differ

8. A nearsighted person has what type of focal length? Thus what do we do to correct this?
Red
Cathode; anode
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
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

9. What is the magnetic quantum number?
-l to +l
Total internal reflection
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Isolating an atom from minerals by decomposing the minerals with an electric current

10. 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
Positron emission
One mole of electric charge
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

11. The electrons emitted from cathode are replaced with what?
Attractive molecular forces acting between material surfaces in contact
They do not differ
Electrons from anode and battery
It can also equal 'mg'; the compressive strength of a substance

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

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14. The temperature of a metal will not increase above its melting point until what?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Mag and direction
The particle's charge and the magnitude of the electric field

15. Melting occurs at what type of temperature? Why?
Mass number stays the same but the atomic number increases
External components of the circuit
F = GMm/r^2
Constant to overcome the heat of fusion (solid to liquid state)

16. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
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
Helium; 4
Colligative: it depends on the number of solute molecules in a given volume of water
It's weight = mg; h

17. What energy conversion describes best what takes place in a battery-powered resistive circuit?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Cathode; anode
L = wavelength/2 so L= (wavelength)(2)
Going from solid to gas phase

18. How do you find wavelength if you known distance from adjacent crests and troughs?
Its twice that distance
It's weight = mg; h
It decreases; the work done by the gas in expanding decreases its internal energy
Helium; 4

19. Why are bonds between H and another atom shorter compared to most?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
From peak to peak
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
H has a small atomic radius

20. When an element decreases its atomic number by one what is emitted?
Mag and direction
In the presence of a base
Positron because this is known as positron decay/electron capture
It will be reduced the voltage produced by the resistor which means IR; E- IR

21. The volume of an object is equal to water?
(+)
Force times the distance over which the force acts
The force along the board to the normal force
Liquid displaced by that object

22. Light can be carried along a distance within a transparent material by means of what?
Decreasing potential energy
Total internal reflection
(+)
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)

23. 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
Only temperature of the water bath
Cathode; anode
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

24. The force on an electrical charge is what?
Energy
F =ma and F= qE
Isolating an atom from minerals by decomposing the minerals with an electric current
The element's mass number

25. If temperature arises during a mixture what can you conclude about the enthalpy?
That it is negative
Positron because this is known as positron decay/electron capture
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
1000

26. The Ksp for a substance of AaBb is what?
A saturated solution in which the aqueous ions are in equilibrium with the solid
[A]^a[B]^b
E = (kq)/r^2
The lowest one

27. What is weight equal to?
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
Mg
Cathode; anode
You look at what is being oxidized and reduced in the problem

28. 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?
At an equal distance behind it as the object is in front of the mirror
6.02 x 10^23 ions/mol
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Alkali metals = first column

29. 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?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
-l to +l
Total internal reflection
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)

30. How do you find specific gravity of an object?
Positron emission
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
(density[p])(volume)
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

31. The visible spectrum ranges from ____ to _____
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
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Constant to overcome the heat of fusion (solid to liquid state)
400 to 700 nm

32. A floating ice cube implies that it's weight is balanced by what?
The buoyant force on it; W = mg = pVg
Vertically; perpendicular to all surfaces
T = (2h/g)^1/2; distance = vt
A salt and water

33. The basicity constant Kb measures what?
A constant force on a mass causes it to have a constant acceleration
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
How strong a base is
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

34. Heat from friction comes from what?
Density (gravitational constant) height
Half of the exponent
Positive
Decreasing potential energy

35. What is the spin projection quantum number?
NO; reduction-oxidation
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
They do not differ
+/- 1/2

36. A plane mirror produces an image where?
0 Hz because they are traveling side by side at the same speed
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
At an equal distance behind it as the object is in front of the mirror

37. What is the equation for pressure?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Density (gravitational constant) height
They must balance

38. Strength of dispersion force increases with what?
0 Hz because they are traveling side by side at the same speed
At an equal distance behind it as the object is in front of the mirror
The regular one
Ease of polarizability of the molecule and thus increasing molecular weight of mass

39. Beta decay is the same as what?
Positron emission
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
E = (kq)/r^2
Constant to overcome the heat of fusion (solid to liquid state)

40. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
Accelerated by a higher voltage between the cathode and anode
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Sp^3
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

41. Mechanical waves in a medium fxn to transport what?
A salt and water
NO; reduction-oxidation
Energy
+/- 1/2

42. How do you find moles of a substance when you are given faradays and electrons?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Faraday/electrons
The nucleus gains a proton and no neutrons
From peak to peak

43. Terminal voltage is provided to what?
Neutrons; atomic number
External components of the circuit
A constant force on a mass causes it to have a constant acceleration
Mg

44. What is sublimation?
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
[A]^a[B]^b
Going from solid to gas phase
The volume of the ice cube or whatever it is

45. How should the period of a waveform be calculated?
Faraday/electrons
From peak to peak
The number of electrons emitted
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

46. In order to guarantee a non-zero spin how many electrons are needed?
P = IV
An odd number
The lowest one
How strong a base is

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

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48. If you are given density and volume how do you find mass?
(density[p])(volume)
0 Hz because they are traveling side by side at the same speed
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Add them together

49. What is the equation for a period (T)? What is the equation for angular velocity?
The lowest one
Vertically; perpendicular to all surfaces
3+
T = 2pi/angular velocity; v/r

50. What is the amt of energy that a frictional force generates?
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
Force times the distance over which the force acts
The reaction between the base and water