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

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

2. What does spatial resolution refer to?
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
Ability to locate an event in space
NO; reduction-oxidation
The path is longer on the inclined plane so it will take object longer to reach the bottom

3. What is the principal quantum number (n)?
Voltage
The force along the board to the normal force
Electron shell number
When you have central atom with six ions on it

4. How do you find length of time something is in flight? How do you find distance it traveled?
It can also equal 'mg'; the compressive strength of a substance
L = wavelength/2 so L= (wavelength)(2)
T = (2h/g)^1/2; distance = vt
0 Hz because they are traveling side by side at the same speed

5. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
The lowest one
The regular one
A saturated solution in which the aqueous ions are in equilibrium with the solid
External components of the circuit

6. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
The reaction between the base and water
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
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Pascal (N*m^2)

7. The coefficient of static friction is the ratio of what?
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
The force along the board to the normal force
One mole of electric charge
Helium; 4

8. In radioactive decay the atomic number (A) and mass number (Z) must what?
Energy
The buoyant force on it; W = mg = pVg
B = pVg; density
They must balance

9. 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?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
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
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
An odd number

10. 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 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
It will be reduced the voltage produced by the resistor which means IR; E- IR
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Electron shell number

11. The square root of 10^anything is equal to what?
Attractive molecular forces acting between material surfaces in contact
T = 2pi/angular velocity; v/r
The nucleus gains a proton and no neutrons
Half of the exponent

12. 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?
400 to 700 nm
It has a positive oxidation potential so it is easily oxidized
Cathode; anode
That it is negative

13. 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 nucleus gains a proton and no neutrons
H = negative and S = positive
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
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

14. When is a body in translational equilibrium?
When all the external forces = zero
Density (gravitational constant) height
How strong a base is
Total internal reflection

15. What is conserved in an inellastic collision?
Only temperature of the water bath
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Momentum
Going from solid to gas phase

16. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Helium; 4
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Only temperature of the water bath
E = (kq)/r^2

17. What is newton's second law?
A constant force on a mass causes it to have a constant acceleration
One mole of electric charge
Momentum
400 to 700 nm

18. 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)
The force along the board to the normal force
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
A saturated solution in which the aqueous ions are in equilibrium with the solid

19. If the equation says that the E^o has (-) voltage when being reduced - but it is being oxidized in the problem - what does the voltage then become?
Ability to locate an event in space
(+)
E = (kq)/r^2
A positron or electron; when atomic number goes up you know an electron has been emitted

20. 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

21. What happens if an atom undergoes positron decay or electron capture?
Energy
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
It's weight = mg; the work would be the weight times the distance fell
It's weight = mg; h

22. Beta decay is the same as what?
Going from solid to gas phase
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Positron emission
Pascal (N*m^2)

23. What is a metathesis rxn?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
H = negative and S = positive
Mv = mv
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

24. Terminal voltage is provided to what?
Isolating an atom from minerals by decomposing the minerals with an electric current
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
It can absorb light that lets other electrons fill those orbitals
External components of the circuit

25. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
Where an event took place
That they are catalysts in the rxn because they react with the substrate and are reformed
E = (kq)/r^2
[S][2S]^2 = 4S^3

26. In order to increase the kinetic energy of electrons - they must be what?
External components of the circuit
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Accelerated by a higher voltage between the cathode and anode
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

27. Isotopes have diff number of ______ but same what?
V/m or N/C
+/- 1/2
Neutrons; atomic number
3+

28. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Red
That of static friction; there is a net accelerating force on the block once it starts to slide
NO; reduction-oxidation

29. What is the spin projection quantum number?
How strong a base is
No - it increases the speed at which the rxn reaches that equilibrium
+/- 1/2
It's weight = mg; h

30. 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

31. What if the circuit elements are in series?
Vertically; perpendicular to all surfaces
-l to +l
180 degrees; when there is half a wave distance in phase between two waves
The current is the same

32. Heat from friction comes from what?
It has a positive oxidation potential so it is easily oxidized
They are directly proportional
Decreasing potential energy
V/m or N/C

33. What are the units of an electric field?
The lowest whole number ratio of moles of each element in a mole of a cmpd
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)
V/m or N/C
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

34. When does red litmus paper turn blue?
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
In the presence of a base
Mg
Positron because this is known as positron decay/electron capture

35. Is the work done by air resistance - positive or negative?
They increase because you hear a lower frequency
The particle's charge and the magnitude of the electric field
Negative
Momentum

36. What is the magnitude of the electric field produced by a point charge?
Colligative; the number of solute particles present
T = 2pi/angular velocity; v/r
Red
E = (kq)/r^2

37. Mechanical waves in a medium fxn to transport what?
Vertically; perpendicular to all surfaces
Helium; 4
It's weight = mg; the work would be the weight times the distance fell
Energy

38. How do you find 'g' from Newton's law of gravity?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Alkali metals = first column
When you have central atom with six ions on it
Electron shell number

39. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
The density of the water and volume of the lead object
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
[S][2S]^2 = 4S^3
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

40. What color is above 656 nm?
Yes - if the particle's trail is equidistant between two adjacent anodes
Mv = mv
Where an event took place
Red

41. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
It can absorb light that lets other electrons fill those orbitals
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
When HIn is turned into In- - which is dependent upon the pKa of the indicator

42. Kb is the equilibrium constant for what?
Mass number stays the same but the atomic number increases
The reaction between the base and water
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
Only temperature of the water bath

43. When you are trying to calculate a galvanic cell's emf - what do you look at?
The lowest whole number ratio of moles of each element in a mole of a cmpd
Gravity
P = IV
You look at what is being oxidized and reduced in the problem

44. A nearsighted person has what type of focal length? Thus what do we do to correct this?
Add them together
The lowest one
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Accelerated by a higher voltage between the cathode and anode

45. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The cross-sectional area through which the fluid flows
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Energy
Strong acid and strong base/ weak acid and weak base

46. If you have circuit elements in parallel what is the same across them?
The nucleus gains a proton and no neutrons
Voltage
1000
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14

47. 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?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
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
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Pascal (N*m^2)

48. Beta decay is the emission of what? How do you know what it is the emission of?
A positron or electron; when atomic number goes up you know an electron has been emitted
It has a positive oxidation potential so it is easily oxidized
In the presence of a base
Force times the distance over which the force acts

49. What is Newton's Universal Law of Gravitation?
The volume of the ice cube or whatever it is
It can also equal 'mg'; the compressive strength of a substance
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
F = GMm/r^2

50. The range of pH in which a color change takes place in a titration depends on what?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
[S][2S]^2 = 4S^3
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect