Test your basic knowledge |

DSST Physical Sciences2

Subjects : dsst, science

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. 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?
Liquid displaced by that object
W = F(displacement)
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Positron emission

2. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
Neutrons; atomic number
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Sp^3
It can absorb light that lets other electrons fill those orbitals

3. What is one faraday equal to?
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
One mole of electric charge
+/- 1/2
It can also equal 'mg'; the compressive strength of a substance

4. The number of incident photons on the cathode affect what?
It can also equal 'mg'; the compressive strength of a substance
The number of electrons emitted
You look at what is being oxidized and reduced in the problem
Helium; 4

5. What happens to a negatively charged particle put between two parallel plates?
The reaction between the base and water
Mg
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
The volume of the ice cube or whatever it is

6. Is the work done by air resistance - positive or negative?
Density (gravitational constant) height
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Negative
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

7. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
It can also equal 'mg'; the compressive strength of a substance
The nucleus gains a proton and no neutrons
T = (2h/g)^1/2; distance = vt
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

8. How many mL is in one liter?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
1000

9. What direction do gravity and bouyancy work? What direction does water pressure work?
The element's mass 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
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
Vertically; perpendicular to all surfaces

10. How do you find moles of a substance when you are given faradays and electrons?
Positive
Mv = mv
From peak to peak
Faraday/electrons

11. What is the formula for the power supplied by a battery to accelerate an electron beam?
The density of the water and volume of the lead object
Isolating an atom from minerals by decomposing the minerals with an electric current
H = negative and S = positive
P = IV

12. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
It will be reduced the voltage produced by the resistor which means IR; E- IR
Mv = mv
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R

13. The concentration of OH and H30 ions are approximately equal at what pH?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Mass number stays the same but the atomic number increases
7 always!!!
Its twice that distance

14. 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
Neutrons; atomic number
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Mv = mv

15. 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

16. What energy conversion describes best what takes place in a battery-powered resistive circuit?
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
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Ability to locate an event in space
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors

17. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
Mg
It will increase as well because they are directly related - only if pressure is kept constant
Only temperature of the water bath
0 Hz because they are traveling side by side at the same speed

18. What color is above 656 nm?
E = (kq)/r^2
The buoyant force on it; W = mg = pVg
(density[p])(volume)
Red

19. The closer the spacing of the anode wire - the better one can specify what?
Where an event took place
E = (kq)/r^2
A saturated solution in which the aqueous ions are in equilibrium with the solid
[A]^a[B]^b

20. What is the doppler equation for wavelength and frequency?
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
V/m or N/C
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

21. What is the unit for Young's Modulus?
External components of the circuit
Going from solid to gas phase
Pascal (N*m^2)
That of static friction; there is a net accelerating force on the block once it starts to slide

22. When you are trying to calculate a galvanic cell's emf - what do you look at?
You look at what is being oxidized and reduced in the problem
Its intensity in the spectrum
Mass number stays the same but the atomic number increases
Sp^3

23. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
Strong acid and strong base/ weak acid and weak base
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Colligative: it depends on the number of solute molecules in a given volume of water
One mole of electric charge

24. What happens if an atom undergoes positron decay or electron capture?
That it is negative
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
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Momentum

25. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The force along the board to the normal force
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed

26. What is the principal quantum number (n)?
Electron shell 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
400 to 700 nm
They increase because you hear a lower frequency

27. The basicity constant Kb measures what?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
How strong a base is
Positron emission
Liquid displaced by that object

28. If asked which electron configuration of an element is most stable which one do you choose?
(+)
Mass number stays the same but the atomic number increases
The regular one
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

29. 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
The regular one
The force along the board to the normal force
Faraday/electrons

30. In radioactive decay the atomic number (A) and mass number (Z) must what?
They must balance
The buoyant force on it; W = mg = pVg
NO; reduction-oxidation
It's weight = mg; the work would be the weight times the distance fell

31. What is the relationship between P and n in PV=nRT?
They are directly proportional
The cross-sectional area through which the fluid flows
1000
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

32. Equivalent mass is what?
Mag and direction
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
Mg
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

33. What kind of geometry is octahedral?
Mv = mv
B = pVg; density
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
When you have central atom with six ions on it

34. 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
The number of electrons emitted
Liquid displaced by that object
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14

35. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Helium; 4
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
At an equal distance behind it as the object is in front of the mirror

36. Acetic acid is a ______ solvent
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
Cathode; anode
Polar
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio

37. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
Mag and direction
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
It decreases; the work done by the gas in expanding decreases its internal energy
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

38. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Faraday/electrons
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
A salt and water
The regular one

39. What do electrolytic techniques involve?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Isolating an atom from minerals by decomposing the minerals with an electric current
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
When you have central atom with six ions on it

40. What if the circuit elements are in series?
1000
Mass number stays the same but the atomic number increases
The current is the same
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

41. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
Isolating an atom from minerals by decomposing the minerals with an electric current
Red
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
Neutrons; atomic number

42. 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

43. Always remember that velocity has ____ and ____
[A]^a[B]^b
Mag and direction
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Colligative: it depends on the number of solute molecules in a given volume of water

44. 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
Half of the exponent
Zero
Colligative: it depends on the number of solute molecules in a given volume of water

45. If you are given density and volume how do you find mass?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Accelerated by a higher voltage between the cathode and anode
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
(density[p])(volume)

46. A plane mirror produces an image where?
At an equal distance behind it as the object is in front of the mirror
0 Hz because they are traveling side by side at the same speed
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
When HIn is turned into In- - which is dependent upon the pKa of the indicator

47. What is sublimation?
Going from solid to gas phase
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
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
They do not differ

48. 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)
The buoyant force on it; W = mg = pVg
Mg
The volume of the ice cube or whatever it is

49. 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 current is the same
+/- 1/2
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
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

50. What kind of charge is on Al?
It can absorb light that lets other electrons fill those orbitals
Its twice that distance
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
3+