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. What does spatial resolution refer to?
Ability to locate an event in space
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
It will increase as well because they are directly related - only if pressure is kept constant
The lowest whole number ratio of moles of each element in a mole of a cmpd

2. When you are trying to find the buyoancy force of water on a lead object what density do you use in the equation B = pVg? what volume?
180 degrees; when there is half a wave distance in phase between two waves
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
The density of the water and volume of the lead object
Attractive molecular forces acting between material surfaces in contact

3. Terminal voltage is provided to what?
Mag and direction
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
External components of the circuit
That they are catalysts in the rxn because they react with the substrate and are reformed

4. What is different between an inclined plane and free fall?
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
It decreases; the work done by the gas in expanding decreases its internal energy
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

5. Acetic acid is a ______ solvent
Momentum
Polar
The lowest one
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

6. What is the formula for the power supplied by a battery to accelerate an electron beam?
P = IV
Energy
Mass number stays the same but the atomic number increases
3+

7. What if the circuit elements are in series?
The current is the same
That it is negative
-l to +l
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

9. The phase difference corresponding to a half wave is what? When do you get destructive interference?
Electron shell number
180 degrees; when there is half a wave distance in phase between two waves
You look at what is being oxidized and reduced in the problem
Ease of polarizability of the molecule and thus increasing molecular weight of mass

10. 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

11. What are the units of an electric field?
V/m or N/C
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Attractive molecular forces acting between material surfaces in contact
Mag and direction

12. Heat from friction comes from what?
Decreasing potential energy
E = (kq)/r^2
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
The lowest whole number ratio of moles of each element in a mole of a cmpd

13. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Its twice that distance
Helium; 4

14. Hydrogen has what kind of standard oxidation or reduction potential?
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
Zero
When electron falls from high energy to low energy level
Energy

15. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
[S][2S]^2 = 4S^3
It will increase as well because they are directly related - only if pressure is kept constant
The regular one
Gravity

16. 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
Half of the exponent
Strong acid and strong base/ weak acid and weak base
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

17. 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
The density of the water and volume of the lead object
T = (2h/g)^1/2; distance = vt
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

18. 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?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Red
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

19. Friction is caused by what?
L = wavelength/2 so L= (wavelength)(2)
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Attractive molecular forces acting between material surfaces in contact
External components of the circuit

20. The free energy change (G) must be negative when what?
H = negative and S = positive
Mg
V/m or N/C
Sp^3

21. How many mL is in one liter?
Liquid displaced by that object
They do not differ
Ease of polarizability of the molecule and thus increasing molecular weight of mass
1000

22. When a falling mass is at terminal speed - what is the power expended by the air resistance?
It can absorb light that lets other electrons fill those orbitals
P = F(v) = mg(v -terminal)
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Half of the exponent

23. How should the period of a waveform be calculated?
400 to 700 nm
From peak to peak
6.02 x 10^23 ions/mol
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors

24. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
L = wavelength/2 so L= (wavelength)(2)
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Positive
External components of the circuit

25. Why does light travel slower in an optically dense medium than through a vacuum?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
T = (2h/g)^1/2; distance = vt
At an equal distance behind it as the object is in front of the mirror
It will increase as well because they are directly related - only if pressure is kept constant

26. A nearsighted person has what type of focal length? Thus what do we do to correct this?
Electrons from anode and battery
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Yes - if the particle's trail is equidistant between two adjacent anodes
Voltage

27. Beta decay is the same as what?
A salt and water
It decreases; the work done by the gas in expanding decreases its internal energy
Positron emission
They increase because you hear a lower frequency

28. 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 lowest whole number ratio of moles of each element in a mole of a cmpd
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
It's weight = mg; the work would be the weight times the distance fell

29. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The current is the same
The cross-sectional area through which the fluid flows
B = pVg; density
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)

30. What is the equation for pressure?
Density (gravitational constant) height
Only temperature of the water bath
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Ability to locate an event in space

31. What is the magnetic quantum number?
+/- 1/2
-l to +l
A constant force on a mass causes it to have a constant acceleration
Ability to locate an event in space

32. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
7 always!!!
Energy
The nucleus gains a proton and no neutrons

33. What is the relationship between P and n in PV=nRT?
T = 2pi/angular velocity; v/r
They are directly proportional
At an equal distance behind it as the object is in front of the mirror
Its intensity in the spectrum

34. Mechanical waves in a medium fxn to transport what?
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
Energy
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Cathode; anode

35. Nuclear masses can be approximated from what?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

36. 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?
That it is negative
It has a positive oxidation potential so it is easily oxidized
Energy
Positron emission

37. 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?
Colligative; the number of solute particles present
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
6.02 x 10^23 ions/mol
Its momentum is zero because velocity is zero; zero because of conservation of momentum

38. If you have circuit elements in parallel what is the same across them?
They must balance
A constant force on a mass causes it to have a constant acceleration
The lowest one
Voltage

39. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
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 has a positive oxidation potential so it is easily oxidized
An odd number
The force along the board to the normal force

40. What kind of geometry is octahedral?
When you have central atom with six ions on it
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Its twice that distance
They do not differ

41. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
A positron or electron; when atomic number goes up you know an electron has been emitted
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
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

42. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Energy
P = F(v) = mg(v -terminal)
Positive

43. What is the amt of energy that a frictional force generates?
They must balance
Force times the distance over which the force acts
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
It's weight = mg; h

44. In Bohr model of atom when is energy emitted?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
When electron falls from high energy to low energy level
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The path is longer on the inclined plane so it will take object longer to reach the bottom

45. How do you find moles of a substance when you are given faradays and electrons?
Faraday/electrons
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
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
400 to 700 nm

46. 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?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Vertically; perpendicular to all surfaces
Only temperature of the water bath
From peak to peak

47. 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?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

48. What is conserved in an inellastic collision?
T = 2pi/angular velocity; v/r
Ability to locate an event in space
Momentum
When electron falls from high energy to low energy level

49. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
P = IV
Total internal reflection
Sp^3
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

50. In a rxn - how do you figure out which atom has the highest electron affinity?
1000
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
The current is the same
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