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. Neither N2 or O2 have a permanent what? What does this mean?
1000
Electrons from anode and battery
Strong acid and strong base/ weak acid and weak base
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

2. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Neutrons; atomic number
Helium; 4
Positive
NO; reduction-oxidation

3. In a rxn - how do you figure out which atom has the highest electron affinity?
P = IV
Mass number stays the same but the atomic number increases
3+
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

4. Is the work done by air resistance - positive or negative?
Liquid displaced by that object
The particle's charge and the magnitude of the electric field
Strong acid and strong base/ weak acid and weak base
Negative

5. How do you find the equiv capacitance of capacitors in series and parallel? What about if you are trying to find equivalent resistance?
Its intensity in the spectrum
(density[p])(volume)
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles

6. What is the equation for bouyant force? What is p?
They increase because you hear a lower frequency
Electrons from anode and battery
B = pVg; density
When all the external forces = zero

7. Half-sine wave shape is what kind of wavelength with regards to length?
It can absorb light that lets other electrons fill those orbitals
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
L = wavelength/2 so L= (wavelength)(2)

8. 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

9. 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?
T = (2h/g)^1/2; distance = vt
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
It will be reduced the voltage produced by the resistor which means IR; E- IR
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

10. Can a catalyst shift equilibrium?
Electrons from anode and battery
No - it increases the speed at which the rxn reaches that equilibrium
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
When all the external forces = zero

11. What is usually conserved over oscillation periods?
Energy
+/- 1/2
Vertically; perpendicular to all surfaces
Attractive molecular forces acting between material surfaces in contact

12. When does red litmus paper turn blue?
In the presence of a base
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
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
When electron falls from high energy to low energy level

13. What happens if an atom undergoes positron decay or electron capture?
Total internal reflection
The particle's charge and the magnitude of the electric field
They are directly proportional
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

14. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
The volume of the ice cube or whatever it is
Electron shell number
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus

15. Friction is caused by what?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Attractive molecular forces acting between material surfaces in contact
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 mass number stays the number but the atomic number decreases by one - usually resulting in another element

16. Melting occurs at what type of temperature? Why?
Constant to overcome the heat of fusion (solid to liquid state)
[S][2S]^2 = 4S^3
Attractive molecular forces acting between material surfaces in contact
Positive

17. How do you find specific gravity of an object?
F = GMm/r^2
H = negative and S = positive
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
Red

18. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
Total internal reflection
The cross-sectional area through which the fluid flows
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
1000

19. Hydrogen has what kind of standard oxidation or reduction potential?
In the presence of a base
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Zero
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

20. What does spatial resolution refer to?
Mg
Ease of polarizability of the molecule and thus increasing molecular weight of mass
B = pVg; density
Ability to locate an event in space

21. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
It's weight = mg; the work would be the weight times the distance fell
Ease of polarizability of the molecule and thus increasing molecular weight of mass
When HIn is turned into In- - which is dependent upon the pKa of the indicator
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

22. What do electrolytic techniques involve?
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
400 to 700 nm
Isolating an atom from minerals by decomposing the minerals with an electric current
Red

23. Terminal voltage is provided to what?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
External components of the circuit
V/m or N/C
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14

24. 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?
From peak to peak
Total internal reflection
They do not differ
The density of the water and volume of the lead object

25. What direction do gravity and bouyancy work? What direction does water pressure work?
Alkali metals = first column
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
[A]^a[B]^b
Vertically; perpendicular to all surfaces

26. What is the principal quantum number (n)?
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
The volume of the ice cube or whatever it is
Electron shell number
3+

27. 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
When electron falls from high energy to low energy level
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
It decreases; the work done by the gas in expanding decreases its internal energy

28. 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

29. The closer the spacing of the anode wire - the better one can specify what?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Where an event took place
Yes - if the particle's trail is equidistant between two adjacent anodes
400 to 700 nm

30. 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 height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
It has a positive oxidation potential so it is easily oxidized
Gravity
The volume of the ice cube or whatever it is

31. The force on an electrical charge is what?
The current is the same
Electron shell number
Positron emission
F =ma and F= qE

32. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Cathode; anode
Look at how many times smaller the H concentration becomes with relation to rate law: if rate law says [H] is second order: ((10^-2)^2/(10^-1)^2 = 10^-2 and then times that answer by the original rate
[S][2S]^2 = 4S^3
When HIn is turned into In- - which is dependent upon the pKa of the indicator

33. What if the circuit elements are in series?
The current is the same
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
No - it increases the speed at which the rxn reaches that equilibrium
H has a small atomic radius

34. What is the equation for a period (T)? What is the equation for angular velocity?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
T = 2pi/angular velocity; v/r
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
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)

35. In order to guarantee a non-zero spin how many electrons are needed?
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
An odd number
When electron falls from high energy to low energy level
That it is negative

36. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
+/- 1/2
At an equal distance behind it as the object is in front of the mirror
When electron falls from high energy to low energy level
It can absorb light that lets other electrons fill those orbitals

37. In radioactive decay the atomic number (A) and mass number (Z) must what?
The element's mass number
They must balance
6.02 x 10^23 ions/mol
One that has more solute particles per liter of solution

38. Why are bonds between H and another atom shorter compared to most?
That it is negative
P = IV
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
H has a small atomic radius

39. When an element decreases its atomic number by one what is emitted?
In the presence of a base
It can absorb light that lets other electrons fill those orbitals
They must balance
Positron because this is known as positron decay/electron capture

40. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
Energy
When HIn is turned into In- - which is dependent upon the pKa of the indicator
They do not differ
Positive

41. The Ksp for a substance of AaBb is what?
That of static friction; there is a net accelerating force on the block once it starts to slide
Liquid displaced by that object
[A]^a[B]^b
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water

42. Acetic acid is a ______ solvent
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
Polar
Zero
Decreasing potential 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
They are directly proportional
P = F(v) = mg(v -terminal)
F =ma and F= qE

44. What type of acid and base would produce a pH closest to 7?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Strong acid and strong base/ weak acid and weak base
It can also equal 'mg'; the compressive strength of a substance
[S][2S]^2 = 4S^3

45. 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

46. The freezing point of an aqueous solution is what kind of property? What does this mean?
The nucleus gains a proton and no neutrons
Its twice that distance
They increase because you hear a lower frequency
Colligative: it depends on the number of solute molecules in a given volume of water

47. Heat from friction comes from what?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Decreasing potential energy
The particle's charge and the magnitude of the electric field
Force times the distance over which the force acts

48. The total pressure of a solution is what? Give example.
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
The reaction between the base and water
B = pVg; density
Electrons from anode and battery

49. What kind of geometry is octahedral?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Pascal (N*m^2)
When you have central atom with six ions on it
(density[p])(volume)

50. Always remember that velocity has ____ and ____
(+)
Mag and direction
It can absorb light that lets other electrons fill those orbitals
When you have central atom with six ions on it