DSST Physical Sciences2

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 kind of geometry is octahedral?
0 Hz because they are traveling side by side at the same speed
The particle's charge and the magnitude of the electric field
When you have central atom with six ions on it
The buoyant force on it; W = mg = pVg


2. 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?
Mv = mv
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
The force along the board to the normal force
The density of the water and volume of the lead object


3. When something is falling what is the force acting on it? Thus what would be the work done?

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4. For a given flow rate - the speed of fluid flow is inversely proportional to what?
That they are catalysts in the rxn because they react with the substrate and are reformed
The force along the board to the normal force
External components of the circuit
The cross-sectional area through which the fluid flows


5. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
V/m or N/C
H has a small atomic radius
They do not differ
H = negative and S = positive


6. In order to guarantee a non-zero spin how many electrons are needed?
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
Pascal (N*m^2)
An odd number
They increase because you hear a lower frequency


7. When you are trying to calculate a galvanic cell's emf - what do you look at?
400 to 700 nm
You look at what is being oxidized and reduced in the problem
It will increase as well because they are directly related - only if pressure is kept constant
An odd number


8. In Bohr model of atom when is energy emitted?
When electron falls from high energy to low energy level
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
At an equal distance behind it as the object is in front of the mirror
Mv = mv


9. Half-sine wave shape is what kind of wavelength with regards to length?
Accelerated by a higher voltage between the cathode and anode
Strong acid and strong base/ weak acid and weak base
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
L = wavelength/2 so L= (wavelength)(2)


10. 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?
When you have central atom with six ions on it
Mag and direction
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
+/- 1/2


11. What is the amt of energy that a frictional force generates?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Force times the distance over which the force acts
1000
One mole of electric charge


12. Can a charged particle be detected by two anodes?

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13. What is different between an inclined plane and free fall?
The volume of the ice cube or whatever it is
400 to 700 nm
The path is longer on the inclined plane so it will take object longer to reach the bottom
3+


14. The volume of an object is equal to water?
Liquid displaced by that object
That of static friction; there is a net accelerating force on the block once it starts to slide
The volume of the ice cube or whatever it is
Energy


15. If you have circuit elements in parallel what is the same across them?
Positive
Voltage
Vertically; perpendicular to all surfaces
Its intensity in the spectrum


16. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
Ability to locate an event in space
400 to 700 nm
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Electrons from anode and battery


17. What does spatial resolution refer to?
How strong a base is
400 to 700 nm
Ability to locate an event in space
That they are catalysts in the rxn because they react with the substrate and are reformed


18. How do you figure out the literature Ksp value of a compound?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Helium; 4
It will increase as well because they are directly related - only if pressure is kept constant
A saturated solution in which the aqueous ions are in equilibrium with the solid


19. The coefficient of kinetic friction is always lower than what? Therefore what?
That of static friction; there is a net accelerating force on the block once it starts to slide
Accelerated by a higher voltage between the cathode and anode
F = GMm/r^2
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


20. Can a catalyst shift equilibrium?
No - it increases the speed at which the rxn reaches that equilibrium
Positron emission
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
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


21. The concentration of OH and H30 ions are approximately equal at what pH?
It has a positive oxidation potential so it is easily oxidized
Force times the distance over which the force acts
7 always!!!
An odd number


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

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23. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
Positron because this is known as positron decay/electron capture
P = F(v) = mg(v -terminal)
It can absorb light that lets other electrons fill those orbitals
3+


24. 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
Neutrons; atomic number
It will be reduced the voltage produced by the resistor which means IR; E- IR
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


25. Terminal voltage is provided to what?
External components of the circuit
F = GMm/r^2
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
Isolating an atom from minerals by decomposing the minerals with an electric current


26. Strength of dispersion force increases with what?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
[A]^a[B]^b
It has a positive oxidation potential so it is easily oxidized
Energy


27. When is a body in translational equilibrium?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
The lowest whole number ratio of moles of each element in a mole of a cmpd
When all the external forces = zero
Electron shell number


28. Nuclear masses can be approximated from what?

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29. At the moment of explosion of an object - what is its momementum? Why? After an explosion what is the total momentum carried by all the fragments?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
[S][2S]^2 = 4S^3
Positive
Going from solid to gas phase


30. How would you find rate of rxn from pH 1 to pH2?
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 element's mass number
Its momentum is zero because velocity is zero; zero because of conservation of momentum
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


31. In general what is formed by an acid-base rxn?
The reaction between the base and water
A positron or electron; when atomic number goes up you know an electron has been emitted
A salt and water
It's weight = mg; h


32. What kind of metals react violently with water?
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
A positron or electron; when atomic number goes up you know an electron has been emitted
Energy
Alkali metals = first column


33. The freezing point of an aqueous solution is what kind of property? What does this mean?
Cathode; anode
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
They do not differ
Colligative: it depends on the number of solute molecules in a given volume of water


34. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
Neutrons; atomic number
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Energy


35. 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?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
(+)
Positron because this is known as positron decay/electron capture
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)


36. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
Force times the distance over which the force acts
It has a positive oxidation potential so it is easily oxidized
The buoyant force on it; W = mg = pVg
It decreases; the work done by the gas in expanding decreases its internal energy


37. A plane mirror produces an image where?
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
One mole of electric charge
At an equal distance behind it as the object is in front of the mirror
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


38. A pendulum moves under the influence of what?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Constant to overcome the heat of fusion (solid to liquid state)
Gravity


39. How do you find moles of a substance when you are given faradays and electrons?
It can absorb light that lets other electrons fill those orbitals
The path is longer on the inclined plane so it will take object longer to reach the bottom
Faraday/electrons
P = F(v) = mg(v -terminal)


40. Light can be carried along a distance within a transparent material by means of what?
The density of the water and volume of the lead object
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
They increase because you hear a lower frequency
Total internal reflection


41. What is weight equal to?
Where an event took place
It will increase as well because they are directly related - only if pressure is kept constant
Mg
When you have central atom with six ions on it


42. 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
Pascal (N*m^2)
Positron because this is known as positron decay/electron capture
The number of electrons emitted


43. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Ease of polarizability of the molecule and thus increasing molecular weight of mass
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


44. Isotopes have diff number of ______ but same what?
B = pVg; density
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
Neutrons; atomic number


45. Beta decay is the same as what?
Positron emission
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Mass number stays the same but the atomic number increases
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4


46. 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?

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47. What is sublimation?
No - it increases the speed at which the rxn reaches that equilibrium
When electron falls from high energy to low energy level
The volume of the ice cube or whatever it is
Going from solid to gas phase


48. How do you find the equiv capacitance of capacitors in series and parallel? What about if you are trying to find equivalent resistance?
External components of the circuit
It has a positive oxidation potential so it is easily oxidized
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
6.02 x 10^23 ions/mol


49. The coefficient of static friction is the ratio of what?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Force times the distance over which the force acts
The force along the board to the normal force
E = (kq)/r^2


50. Mechanical waves in a medium fxn to transport what?
P = IV
The reaction between the base and water
Energy
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio