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 happens to a negatively charged particle put between two parallel plates?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
One that has more solute particles per liter of solution
Faraday/electrons
(+)

2. If you have circuit elements in parallel what is the same across them?
Mass number stays the same but the atomic number increases
Energy
Pascal (N*m^2)
Voltage

3. What is the principal quantum number (n)?
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)
It decreases; the work done by the gas in expanding decreases its internal energy
Electron shell number

4. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
P = F(v) = mg(v -terminal)
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
It can also equal 'mg'; the compressive strength of a substance
Pascal (N*m^2)

5. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
6.02 x 10^23 ions/mol
Helium; 4
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
400 to 700 nm

6. What type of acid and base would produce a pH closest to 7?
That of static friction; there is a net accelerating force on the block once it starts to slide
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Strong acid and strong base/ weak acid and weak base

7. What is the unit for Young's Modulus?
Colligative; the number of solute particles present
Pascal (N*m^2)
It's weight = mg; the work would be the weight times the distance fell
1000

8. Equivalent mass is what?
F = GMm/r^2
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
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
How strong a base is

9. A plane mirror produces an image where?
F =ma and F= qE
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
Sp^3
At an equal distance behind it as the object is in front of the mirror

10. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
3+
Force times the distance over which the force acts
A saturated solution in which the aqueous ions are in equilibrium with the solid
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

11. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
The number of electrons emitted
Only temperature of the water bath
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
Colligative: it depends on the number of solute molecules in a given volume of water

12. A floating ice cube implies that it's weight is balanced by what?
(density[p])(volume)
It has a positive oxidation potential so it is easily oxidized
0 Hz because they are traveling side by side at the same speed
The buoyant force on it; W = mg = pVg

13. 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

14. 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

15. 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
When all the external forces = zero
Its momentum is zero because velocity is zero; zero because of conservation of momentum
They must balance

16. Can a catalyst shift equilibrium?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Its momentum is zero because velocity is zero; zero because of conservation of momentum
No - it increases the speed at which the rxn reaches that equilibrium
0 Hz because they are traveling side by side at the same speed

17. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
Where an event took place
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
W = F(displacement)
NO; reduction-oxidation

18. In a rxn - how do you figure out which atom has the highest electron affinity?
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
Colligative: it depends on the number of solute molecules in a given volume of water
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
180 degrees; when there is half a wave distance in phase between two waves

19. 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 number of electrons emitted
Its momentum is zero because velocity is zero; zero because of conservation of momentum

20. If temperature arises during a mixture what can you conclude about the enthalpy?
(density[p])(volume)
[S][2S]^2 = 4S^3
The lowest whole number ratio of moles of each element in a mole of a cmpd
That it is negative

21. How should the period of a waveform be calculated?
The cross-sectional area through which the fluid flows
From peak to peak
Liquid displaced by that object
400 to 700 nm

22. What is the amt of energy that a frictional force generates?
Force times the distance over which the force acts
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
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
E = (kq)/r^2

23. Always remember that velocity has ____ and ____
Mag and direction
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
7 always!!!
Mv = mv

24. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
No - it increases the speed at which the rxn reaches that equilibrium
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed

25. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
It decreases; the work done by the gas in expanding decreases its internal energy
Going from solid to gas phase
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

26. What is the equation for a period (T)? What is the equation for angular velocity?
They must balance
They do not differ
T = 2pi/angular velocity; v/r
That it is negative

27. The square root of 10^anything is equal to what?
Vertically; perpendicular to all surfaces
They are directly proportional
Ability to locate an event in space
Half of the exponent

28. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
The nucleus gains a proton and no neutrons
Density (gravitational constant) height
Total internal reflection
[A]^a[B]^b

29. 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
(+)
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
Liquid displaced by that object

30. What is Newton's Universal Law of Gravitation?
0 Hz because they are traveling side by side at the same speed
H = negative and S = positive
It's weight = mg; the work would be the weight times the distance fell
F = GMm/r^2

31. 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
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
You look at what is being oxidized and reduced in the problem
A salt and water

32. 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

33. How do you balance redox rxns?

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

34. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
F =ma and F= qE
It's weight = mg; the work would be the weight times the distance fell

35. How do you find the equiv capacitance of capacitors in series and parallel? What about if you are trying to find equivalent resistance?
+/- 1/2
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Mass number stays the same but the atomic number increases
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

36. Strength of dispersion force increases with what?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
7 always!!!
The density of the water and volume of the lead object

37. Kb is the equilibrium constant for what?
The particle's charge and the magnitude of the electric field
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
The reaction between the base and water
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

38. 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?
L = wavelength/2 so L= (wavelength)(2)
Negative
It has a positive oxidation potential so it is easily oxidized
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

39. When a falling mass is at terminal speed - what is the power expended by the air resistance?
L = wavelength/2 so L= (wavelength)(2)
They must balance
Polar
P = F(v) = mg(v -terminal)

40. What is the spin projection quantum number?
[A]^a[B]^b
Decreasing potential energy
It decreases; the work done by the gas in expanding decreases its internal energy
+/- 1/2

41. What are the units of an electric field?
Polar
The lowest one
V/m or N/C
Decreasing potential energy

42. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The cross-sectional area through which the fluid flows
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
V/m or N/C
It decreases; the work done by the gas in expanding decreases its internal energy

43. The phase difference corresponding to a half wave is what? When do you get destructive interference?
180 degrees; when there is half a wave distance in phase between two waves
The cross-sectional area through which the fluid flows
The element's mass number
It's weight = mg; the work would be the weight times the distance fell

44. What is one faraday equal to?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
L = wavelength/2 so L= (wavelength)(2)
The cross-sectional area through which the fluid flows
One mole of electric charge

45. Friction is caused by what?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Positive
Attractive molecular forces acting between material surfaces in contact
Neutrons; atomic number

46. Beta decay is the same as what?
Positron emission
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
The particle's charge and the magnitude of the electric field
Going from solid to gas phase

47. What does spatial resolution refer to?
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
Ability to locate an event in space
W = F(displacement)
A saturated solution in which the aqueous ions are in equilibrium with the solid

48. How do you find length of time something is in flight? How do you find distance it traveled?
The reaction between the base and water
A saturated solution in which the aqueous ions are in equilibrium with the solid
Electron shell number
T = (2h/g)^1/2; distance = vt

49. What happens if an atom undergoes positron decay or electron capture?
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 mass number stays the number but the atomic number decreases by one - usually resulting in another element
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)
When all the external forces = zero

50. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
You look at what is being oxidized and reduced in the problem
1000
F =ma and F= qE
They do not differ