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. How many mL is in one liter?
Add them together
The density of the water and volume of the lead object
1000
Colligative: it depends on the number of solute molecules in a given volume of water

2. How do you find specific gravity of an object?
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
Momentum
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
Pascal (N*m^2)

3. A floating ice cube implies that it's weight is balanced by what?
V/m or N/C
The buoyant force on it; W = mg = pVg
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
The element's mass number

4. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
Accelerated by a higher voltage between the cathode and anode
A positron or electron; when atomic number goes up you know an electron has been emitted
You look at what is being oxidized and reduced in the problem
That they are catalysts in the rxn because they react with the substrate and are reformed

5. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
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
Decreasing potential energy
It can absorb light that lets other electrons fill those orbitals
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

6. What kind of geometry is octahedral?
Only temperature of the water bath
When you have central atom with six ions on it
A constant force on a mass causes it to have a constant acceleration
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

7. What is sublimation?
[S][2S]^2 = 4S^3
Red
Going from solid to gas phase
One mole of electric charge

8. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
The path is longer on the inclined plane so it will take object longer to reach the bottom
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
That of static friction; there is a net accelerating force on the block once it starts to slide
Attractive molecular forces acting between material surfaces in contact

9. In a rxn - how do you figure out which atom has the highest electron affinity?
Neutrons; atomic number
The nucleus gains a proton and no neutrons
The cross-sectional area through which the fluid flows
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

10. 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 lowest whole number ratio of moles of each element in a mole of a cmpd
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Colligative; the number of solute particles present
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c

11. In Bohr model of atom when is energy emitted?
Voltage
External components of the circuit
The lowest whole number ratio of moles of each element in a mole of a cmpd
When electron falls from high energy to low energy level

12. What are the units of an electric field?
3+
A positron or electron; when atomic number goes up you know an electron has been emitted
V/m or N/C
Constant to overcome the heat of fusion (solid to liquid state)

13. The temperature of a metal will not increase above its melting point until what?
Faraday/electrons
Only temperature of the water bath
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
7 always!!!

14. Heat from friction comes from what?
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Decreasing potential energy
Mg

15. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
E = (kq)/r^2
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
L = wavelength/2 so L= (wavelength)(2)
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

16. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
Only temperature of the water bath
It can absorb light that lets other electrons fill those orbitals
The particle's charge and the magnitude of the electric field
E = (kq)/r^2

17. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
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
It can absorb light that lets other electrons fill those orbitals
They increase because you hear a lower frequency
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

18. How do you balance redox rxns?

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

19. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
Its intensity in the spectrum
F =ma and F= qE
They increase because you hear a lower frequency
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

20. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
Electrons from anode and battery
Add them together
They increase because you hear a lower frequency
The nucleus gains a proton and no neutrons

21. What does the empirical formula show?
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
When you have central atom with six ions on it
The lowest whole number ratio of moles of each element in a mole of a cmpd
Gravity

22. Equivalent mass is what?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
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
That they are catalysts in the rxn because they react with the substrate and are reformed
The path is longer on the inclined plane so it will take object longer to reach the bottom

23. When is a body in translational equilibrium?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
A positron or electron; when atomic number goes up you know an electron has been emitted
They are directly proportional
When all the external forces = zero

24. What kind of metals react violently with water?
Half of the exponent
No - it increases the speed at which the rxn reaches that equilibrium
One that has more solute particles per liter of solution
Alkali metals = first column

25. Hydrogen has what kind of standard oxidation or reduction potential?
T = (2h/g)^1/2; distance = vt
You look at what is being oxidized and reduced in the problem
Zero
The lowest one

26. What is the amt of energy that a frictional force generates?
The lowest whole number ratio of moles of each element in a mole of a cmpd
Mg
Force times the distance over which the force acts
Colligative; the number of solute particles present

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

28. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
It can also equal 'mg'; the compressive strength of a substance
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
Its intensity in the spectrum
When you have central atom with six ions on it

29. Mechanical waves in a medium fxn to transport what?
Electrons from anode and battery
Accelerated by a higher voltage between the cathode and anode
Colligative; the number of solute particles present
Energy

30. What type of acid and base would produce a pH closest to 7?
A constant force on a mass causes it to have a constant acceleration
That it is negative
You look at what is being oxidized and reduced in the problem
Strong acid and strong base/ weak acid and weak base

31. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
Colligative: it depends on the number of solute molecules in a given volume of water
They do not differ
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
You look at what is being oxidized and reduced in the problem

32. When a falling mass is at terminal speed - what is the power expended by the air resistance?
H = negative and S = positive
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Red
P = F(v) = mg(v -terminal)

33. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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

34. The coefficient of static friction is the ratio of what?
Positive
400 to 700 nm
When all the external forces = zero
The force along the board to the normal force

35. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
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
Cathode; anode
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Positron emission

36. 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?
The density of the water and volume of the lead object
The reaction between the base and water
Vertically; perpendicular to all surfaces
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

37. How do you figure out the literature Ksp value of a compound?
Electrons from anode and battery
A saturated solution in which the aqueous ions are in equilibrium with the solid
Positron because this is known as positron decay/electron capture
400 to 700 nm

38. 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?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Add them together
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

39. What is the law of conservation of linear momentum?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Yes - if the particle's trail is equidistant between two adjacent anodes
Mv = mv
External components of the circuit

40. What does spatial resolution refer to?
The force along the board to the normal force
Cathode; anode
Ability to locate an event in space
Add them together

41. How do you find moles of a substance when you are given faradays and electrons?
180 degrees; when there is half a wave distance in phase between two waves
Its twice that distance
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)
Faraday/electrons

42. 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?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
It has a positive oxidation potential so it is easily oxidized
T = (2h/g)^1/2; distance = vt
Energy

43. 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

44. The electrical force on a particle depends on what?

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

45. How do you find length of time something is in flight? How do you find distance it traveled?
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
T = (2h/g)^1/2; distance = vt
Only temperature of the water bath
Strong acid and strong base/ weak acid and weak base

46. What is the doppler equation for wavelength and frequency?
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Energy
The element's mass number
F = GMm/r^2

47. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
[S][2S]^2 = 4S^3
Constant to overcome the heat of fusion (solid to liquid state)
H has a small atomic radius
That of static friction; there is a net accelerating force on the block once it starts to slide

48. The freezing point of an aqueous solution is what kind of property? What does this mean?
Colligative: it depends on the number of solute molecules in a given volume of water
Voltage
An odd number
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

49. The volume of an object is equal to water?
Liquid displaced by that object
Alkali metals = first column
It has a positive oxidation potential so it is easily oxidized
Its twice that distance

50. In general what is formed by an acid-base rxn?
T = (2h/g)^1/2; distance = vt
A salt and water
Sp^3
That it is negative