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. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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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?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Energy
The volume of the ice cube or whatever it is
The element's mass number


3. Mechanical waves in a medium fxn to transport what?
[A]^a[B]^b
Energy
Strong acid and strong base/ weak acid and weak base
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


4. What kind of charge is on Al?
The regular one
3+
180 degrees; when there is half a wave distance in phase between two waves
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


5. What is the equation for bouyant force? What is p?
B = pVg; density
That of static friction; there is a net accelerating force on the block once it starts to slide
In the presence of a base
Force times the distance over which the force acts


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

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7. Beta decay is the emission of what? How do you know what it is the emission of?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
When you have central atom with six ions on it
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
A positron or electron; when atomic number goes up you know an electron has been emitted


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

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9. What is the principal quantum number (n)?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Mg
Electron shell number
The lowest one


10. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
One that has more solute particles per liter of solution
7 always!!!
Voltage
The lowest one


11. What is a metathesis rxn?
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
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
Red
0 Hz because they are traveling side by side at the same speed


12. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
Gravity
It's weight = mg; the work would be the weight times the distance fell
The nucleus gains a proton and no neutrons
They must balance


13. When an element decreases its atomic number by one what is emitted?
Positron because this is known as positron decay/electron capture
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The regular one
7 always!!!


14. 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
V/m or N/C
Positron because this is known as positron decay/electron capture
Neutrons; atomic number


15. If you have circuit elements in parallel what is the same across them?
0 Hz because they are traveling side by side at the same speed
Voltage
Total internal reflection
That they are catalysts in the rxn because they react with the substrate and are reformed


16. How do you figure out the literature Ksp value of a compound?
Helium; 4
A salt and water
Sp^3
A saturated solution in which the aqueous ions are in equilibrium with the solid


17. What if the circuit elements are in series?
No - it increases the speed at which the rxn reaches that equilibrium
Its twice that distance
The current is the same
From peak to peak


18. How do you balance redox rxns?

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19. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Where an event took place
The cross-sectional area through which the fluid flows
It can also equal 'mg'; the compressive strength of a substance


20. What is the formula for the power supplied by a battery to accelerate an electron beam?
P = IV
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
Attractive molecular forces acting between material surfaces in contact
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


21. What direction do gravity and bouyancy work? What direction does water pressure work?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
The nucleus gains a proton and no neutrons
Vertically; perpendicular to all surfaces
It will be reduced the voltage produced by the resistor which means IR; E- IR


22. When does red litmus paper turn blue?
Negative
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
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
In the presence of a base


23. What is the law of conservation of linear momentum?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
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
Mv = mv
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


24. The basicity constant Kb measures what?
Faraday/electrons
Isolating an atom from minerals by decomposing the minerals with an electric current
How strong a base is
The reaction between the base and water


25. The temperature of a metal will not increase above its melting point until what?
Neutrons; atomic number
Alkali metals = first column
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
It experiences a constant electric force of qE and will thus accelerate towards the positive plate


26. An oxidation-reduction rxn that occurs spontaneously has what kind of E^o for the cell?
Positive
Half of the exponent
Mg
The path is longer on the inclined plane so it will take object longer to reach the bottom


27. What are the units of an electric field?
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
[A]^a[B]^b
V/m or N/C
It experiences a constant electric force of qE and will thus accelerate towards the positive plate


28. The closer the spacing of the anode wire - the better one can specify what?
It has a positive oxidation potential so it is easily oxidized
T = 2pi/angular velocity; v/r
Where an event took place
Polar


29. What energy conversion describes best what takes place in a battery-powered resistive circuit?
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
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors


30. Hydrogen has what kind of standard oxidation or reduction potential?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Zero
Cathode; anode
From peak to peak


31. Is the work done by air resistance - positive or negative?
Negative
When you have central atom with six ions on it
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


32. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Going from solid to gas phase
NO; reduction-oxidation
Density (gravitational constant) height


33. What is the spin projection quantum number?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
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
+/- 1/2
Strong acid and strong base/ weak acid and weak base


34. Charged particles in motion constitute what? Freely moving charges are deflected by what? The curved path depends on what?
V/m or N/C
Positron emission
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
Ability to locate an event in space


35. What is conserved in an inellastic collision?
Yes - if the particle's trail is equidistant between two adjacent anodes
Momentum
At an equal distance behind it as the object is in front of the mirror
Mag and direction


36. Considering the answer in the last slide - what kind of a solution would have a lower freezing pt?
One that has more solute particles per liter of solution
When you have central atom with six ions on it
Constant to overcome the heat of fusion (solid to liquid state)
A saturated solution in which the aqueous ions are in equilibrium with the solid


37. What happens to a negatively charged particle put between two parallel plates?
3+
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
180 degrees; when there is half a wave distance in phase between two waves


38. The volume of an object is equal to water?
Going from solid to gas phase
Liquid displaced by that object
Isolating an atom from minerals by decomposing the minerals with an electric current
Density (gravitational constant) height


39. How do you find moles of a substance when you are given faradays and electrons?
Where an event took place
F = GMm/r^2
Faraday/electrons
Gravity


40. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
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
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
They do not differ
The path is longer on the inclined plane so it will take object longer to reach the bottom


41. In PV=nRT - if temp increases what will happen to volume?
Positive
It will increase as well because they are directly related - only if pressure is kept constant
Liquid displaced by that object
-l to +l


42. What are the three separate module for tensile stress - shear stress - and compression/expansion?

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43. 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
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
That of static friction; there is a net accelerating force on the block once it starts to slide
(density[p])(volume)


44. When is a body in translational equilibrium?
7 always!!!
Its twice that distance
When all the external forces = zero
It can absorb light that lets other electrons fill those orbitals


45. Can a catalyst shift equilibrium?
-l to +l
No - it increases the speed at which the rxn reaches that equilibrium
Going from solid to gas phase
Voltage


46. The phase difference corresponding to a half wave is what? When do you get destructive interference?
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
180 degrees; when there is half a wave distance in phase between two waves
At an equal distance behind it as the object is in front of the mirror
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)


47. What is the amt of energy that a frictional force generates?
That of static friction; there is a net accelerating force on the block once it starts to slide
Force times the distance over which the force acts
Ease of polarizability of the molecule and thus increasing molecular weight of mass
The regular one


48. When the source of a sound is flying away from you what happens to the wavelengths from peak to peak?
They increase because you hear a lower frequency
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
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Positron because this is known as positron decay/electron capture


49. 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
Voltage
The number of electrons emitted
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant


50. Beta decay is the same as what?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
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
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Positron emission