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 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

2. 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?
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
In the presence of a base
It will be reduced the voltage produced by the resistor which means IR; E- IR
Vertically; perpendicular to all surfaces

3. Kb is the equilibrium constant for what?
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
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 element's mass number
The reaction between the base and water

4. When a falling mass is at terminal speed - what is the power expended by the air resistance?
That they are catalysts in the rxn because they react with the substrate and are reformed
P = F(v) = mg(v -terminal)
Total internal reflection
External components of the circuit

5. The total pressure of a solution is what? Give example.
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Constant to overcome the heat of fusion (solid to liquid state)
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
H has a small atomic radius

6. What is the magnitude of the electric field produced by a point charge?
Negative
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
E = (kq)/r^2
Sp^3

7. 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
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
Strong acid and strong base/ weak acid and weak base
6.02 x 10^23 ions/mol

8. If temperature arises during a mixture what can you conclude about the enthalpy?
That it is negative
The regular one
Accelerated by a higher voltage between the cathode and anode
-l to +l

9. Always remember that velocity has ____ and ____
Mag and direction
Decreasing potential energy
It can also equal 'mg'; the compressive strength of a substance
At an equal distance behind it as the object is in front of the mirror

10. Mechanical waves in a medium fxn to transport what?
Energy
Vertically; perpendicular to all surfaces
1000
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

11. Terminal voltage is provided to what?
Colligative; the number of solute particles present
External components of the circuit
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Mg

12. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Half of the exponent
Sp^3
Polar

13. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
The current is the same
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
Constant to overcome the heat of fusion (solid to liquid state)
An odd number

14. In order to guarantee a non-zero spin how many electrons are needed?
An odd number
Red
Constant to overcome the heat of fusion (solid to liquid state)
L = wavelength/2 so L= (wavelength)(2)

15. The free energy change (G) must be negative when what?
H = negative and S = positive
In the presence of a base
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Positron because this is known as positron decay/electron capture

16. If you have circuit elements in parallel what is the same across them?
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Vertically; perpendicular to all surfaces
Voltage
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

17. When is a body in translational equilibrium?
Half of the exponent
Accelerated by a higher voltage between the cathode and anode
When all the external forces = zero
H = negative and S = positive

18. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
Colligative: it depends on the number of solute molecules in a given volume of water
Negative
1000
The lowest one

19. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
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
Attractive molecular forces acting between material surfaces in contact
They are directly proportional
When electron falls from high energy to low energy level

20. Considering the answer in the last slide - what kind of a solution would have a lower freezing pt?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
One that has more solute particles per liter of solution
B = pVg; density
Going from solid to gas phase

21. If you are given density and volume how do you find mass?
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
Add them together
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
(density[p])(volume)

22. The concentration of OH and H30 ions are approximately equal at what pH?
The path is longer on the inclined plane so it will take object longer to reach the bottom
Half of the exponent
7 always!!!
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

23. How do you find 'g' from Newton's law of gravity?
F =ma and F= qE
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
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

24. A nearsighted person has what type of focal length? Thus what do we do to correct this?
P = F(v) = mg(v -terminal)
Alkali metals = first column
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
At an equal distance behind it as the object is in front of the mirror

25. What is Avagadro's number regarding ions/mol?
W = F(displacement)
6.02 x 10^23 ions/mol
The particle's charge and the magnitude of the electric field
That it is negative

26. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
+/- 1/2
The nucleus gains a proton and no neutrons
The density of the water and volume of the lead object
H = negative and S = positive

27. What is sublimation?
Going from solid to gas phase
Constant to overcome the heat of fusion (solid to liquid state)
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
400 to 700 nm

28. How do you figure out the literature Ksp value of a compound?
1000
You look at what is being oxidized and reduced in the problem
A saturated solution in which the aqueous ions are in equilibrium with the solid
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio

29. What is different between an inclined plane and free fall?
H = negative and S = positive
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Constant to overcome the heat of fusion (solid to liquid state)
The path is longer on the inclined plane so it will take object longer to reach the bottom

30. What does spatial resolution refer to?
Ability to locate an event in space
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c

31. 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?
Accelerated by a higher voltage between the cathode and anode
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

32. 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?
Colligative: it depends on the number of solute molecules in a given volume of water
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
The force along the board to the normal force
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

33. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
Accelerated by a higher voltage between the cathode and anode
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
E = (kq)/r^2

34. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
0 Hz because they are traveling side by side at the same speed
Only temperature of the water bath
The path is longer on the inclined plane so it will take object longer to reach the bottom

35. The square root of 10^anything is equal to what?
The number of electrons emitted
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
Half of the exponent
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

36. 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?
[S][2S]^2 = 4S^3
It can absorb light that lets other electrons fill those orbitals
From peak to peak
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

37. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
Positive
0 Hz because they are traveling side by side at the same speed
Accelerated by a higher voltage between the cathode and anode
Positron because this is known as positron decay/electron capture

38. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
Density (gravitational constant) height
The nucleus gains a proton and no neutrons
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
3+

39. Heat from friction comes from what?
V/m or N/C
The force along the board to the normal force
A saturated solution in which the aqueous ions are in equilibrium with the solid
Decreasing potential energy

40. 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?
Force times the distance over which the force acts
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Polar

41. What do electrolytic techniques involve?
Electron shell number
6.02 x 10^23 ions/mol
Isolating an atom from minerals by decomposing the minerals with an electric current
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

42. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
B = pVg; density
W = F(displacement)
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)

43. When does red litmus paper turn blue?
Constant to overcome the heat of fusion (solid to liquid state)
That it is negative
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
In the presence of a base

44. What direction do gravity and bouyancy work? What direction does water pressure work?
Momentum
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
6.02 x 10^23 ions/mol
Vertically; perpendicular to all surfaces

45. The volume of an object is equal to water?
Going from solid to gas phase
The regular one
Liquid displaced by that object
P = F(v) = mg(v -terminal)

46. A pendulum moves under the influence of what?
In the presence of a base
From peak to peak
Gravity
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

47. Equivalent mass is what?
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]^a[B]^b
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
Pascal (N*m^2)

48. What happens if an atom undergoes positron decay or electron capture?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Colligative: it depends on the number of solute molecules in a given volume of water
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Strong acid and strong base/ weak acid and weak base

49. 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
That of static friction; there is a net accelerating force on the block once it starts to slide
Faraday/electrons
The regular one

50. What is the unit for Young's Modulus?
It can also equal 'mg'; the compressive strength of a substance
1000
Constant to overcome the heat of fusion (solid to liquid state)
Pascal (N*m^2)