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. The equivalence pt is what part of the titration curve? Thus looking at the range of change between the pH values along this part of the graph can tell you what?

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

2. If both weight and bouyant force are dependent on g - that makes g independent of what?
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Mg
The lowest one
The volume of the ice cube or whatever it is

3. In radioactive decay the atomic number (A) and mass number (Z) must what?
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
They must balance
At an equal distance behind it as the object is in front of the mirror
Add them together

4. What is the equation for bouyant force? What is p?
180 degrees; when there is half a wave distance in phase between two waves
Cathode; anode
B = pVg; density
Mv = mv

5. Beta decay is the same as what?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
B = pVg; density
0 Hz because they are traveling side by side at the same speed
Positron emission

6. When does red litmus paper turn blue?
The reaction between the base and water
B = pVg; density
In the presence of a base
H = negative and S = positive

7. 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
Its intensity in the spectrum
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Mg

8. 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?
Accelerated by a higher voltage between the cathode and anode
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
No - it increases the speed at which the rxn reaches that equilibrium
It has a positive oxidation potential so it is easily oxidized

9. Isotopes have diff number of ______ but same what?
They do not differ
P = IV
It will increase as well because they are directly related - only if pressure is kept constant
Neutrons; atomic number

10. If the source of sound and the listener are traveling side by side at the same speed - what will the change in freq heard by the listener be?
0 Hz because they are traveling side by side at the same speed
L = wavelength/2 so L= (wavelength)(2)
-l to +l
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus

11. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
V/m or N/C
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
One that has more solute particles per liter of solution
Sp^3

12. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
+/- 1/2
The regular one
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
E = (kq)/r^2

13. What happens to a negatively charged particle put between two parallel plates?
That of static friction; there is a net accelerating force on the block once it starts to slide
That it is negative
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
It has a positive oxidation potential so it is easily oxidized

14. What would the force be of a block on a pulley? What would be its displacement?

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

15. What kind of metals react violently with water?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Alkali metals = first column
W = F(displacement)
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

16. Light can be carried along a distance within a transparent material by means of what?
No - it increases the speed at which the rxn reaches that equilibrium
Positron emission
Total internal reflection
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

17. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
6.02 x 10^23 ions/mol
It will be reduced the voltage produced by the resistor which means IR; E- IR
The lowest whole number ratio of moles of each element in a mole of a cmpd
Only temperature of the water bath

18. When a falling mass is at terminal speed - what is the power expended by the air resistance?
B = pVg; density
L = wavelength/2 so L= (wavelength)(2)
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
P = F(v) = mg(v -terminal)

19. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
It can absorb light that lets other electrons fill those orbitals
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
They must balance
That it is negative

20. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
Mv = mv
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
It's weight = mg; the work would be the weight times the distance fell
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous

21. What if the circuit elements are in series?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
The path is longer on the inclined plane so it will take object longer to reach the bottom
The current is the same
The volume of the ice cube or whatever it is

22. What is Newton's Universal Law of Gravitation?
F = GMm/r^2
One that has more solute particles per liter of solution
When all the external forces = zero
T = 2pi/angular velocity; v/r

23. What do electrolytic techniques involve?
Isolating an atom from minerals by decomposing the minerals with an electric current
An odd number
The density of the water and volume of the lead object
Mv = mv

24. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
The path is longer on the inclined plane so it will take object longer to reach the bottom
Strong acid and strong base/ weak acid and weak base
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
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

25. When is a body in translational equilibrium?
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
Faraday/electrons
Negative
When all the external forces = zero

26. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
Mg
External components of the circuit
That of static friction; there is a net accelerating force on the block once it starts to slide
[S][2S]^2 = 4S^3

27. If you have circuit elements in parallel what is the same across them?
Red
A saturated solution in which the aqueous ions are in equilibrium with the solid
Voltage
It will increase as well because they are directly related - only if pressure is kept constant

28. How do you balance redox rxns?

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

29. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
That they are catalysts in the rxn because they react with the substrate and are reformed
A positron or electron; when atomic number goes up you know an electron has been emitted
The volume of the ice cube or whatever it is
H = negative and S = positive

30. The Ksp for a substance of AaBb is what?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
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
[A]^a[B]^b
Mg

31. Why does light travel slower in an optically dense medium than through a vacuum?
T = 2pi/angular velocity; v/r
Only temperature of the water bath
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
One mole of electric charge

32. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Ease of polarizability of the molecule and thus increasing molecular weight of mass
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Red

33. Can a catalyst shift equilibrium?
When you have central atom with six ions on it
Decreasing potential energy
No - it increases the speed at which the rxn reaches that equilibrium
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

34. If you are told to find the maximum number of NiCo3 that can form how do you do that?

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

35. 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?
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
Its twice that distance
Negative
H = negative and S = positive

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?
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
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
A positron or electron; when atomic number goes up you know an electron has been emitted
Its twice that distance

37. What does spatial resolution refer to?
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Ability to locate an event in space
Zero
Mag and direction

38. The temperature of a metal will not increase above its melting point until what?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Positron because this is known as positron decay/electron capture
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Negative

39. What kind of charge is on Al?
Constant to overcome the heat of fusion (solid to liquid state)
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
3+
The volume of the ice cube or whatever it is

40. What color is above 656 nm?
400 to 700 nm
Red
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Isolating an atom from minerals by decomposing the minerals with an electric current

41. 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
Its intensity in the spectrum
E = (kq)/r^2
Strong acid and strong base/ weak acid and weak base

42. What is the magnetic quantum number?
You look at what is being oxidized and reduced in the problem
-l to +l
Its intensity in the spectrum
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors

43. The phase difference corresponding to a half wave is what? When do you get destructive interference?
Sp^3
180 degrees; when there is half a wave distance in phase between two waves
Attractive molecular forces acting between material surfaces in contact
When electron falls from high energy to low energy level

44. What is the formula for the power supplied by a battery to accelerate an electron beam?
From peak to peak
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
P = IV
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect

45. A pendulum moves under the influence of what?
It decreases; the work done by the gas in expanding decreases its internal energy
Colligative: it depends on the number of solute molecules in a given volume of water
The nucleus gains a proton and no neutrons
Gravity

46. The free energy change (G) must be negative when 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
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
H = negative and S = positive
0 Hz because they are traveling side by side at the same speed

47. How do you find wavelength if you known distance from adjacent crests and troughs?
The reaction between the base and water
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Positive
Its twice that distance

48. In PV=nRT - if temp increases what will happen to volume?
It will increase as well because they are directly related - only if pressure is kept constant
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Strong acid and strong base/ weak acid and weak base
The number of electrons emitted

49. The force on an electrical charge is what?
Energy
Total internal reflection
F =ma and F= qE
A saturated solution in which the aqueous ions are in equilibrium with the solid

50. 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?
The path is longer on the inclined plane so it will take object longer to reach the bottom
180 degrees; when there is half a wave distance in phase between two waves
(+)
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