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. Can a catalyst shift equilibrium?
It decreases; the work done by the gas in expanding decreases its internal energy
No - it increases the speed at which the rxn reaches that equilibrium
Faraday/electrons
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed


2. In a rxn - how do you figure out which atom has the highest electron affinity?
Energy
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
Negative
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


3. How many mL is in one liter?
Yes - if the particle's trail is equidistant between two adjacent anodes
1000
Density (gravitational constant) height
When all the external forces = zero


4. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
Vertically; perpendicular to all surfaces
[S][2S]^2 = 4S^3
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
How strong a base is


5. What is different between an inclined plane and free fall?
Polar
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
Constant to overcome the heat of fusion (solid to liquid state)
The path is longer on the inclined plane so it will take object longer to reach the bottom


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

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


7. Friction is caused by what?
Attractive molecular forces acting between material surfaces in contact
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Strong acid and strong base/ weak acid and weak base
Positron because this is known as positron decay/electron capture


8. What is the equation for work done?
Half of the exponent
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
W = F(displacement)
Strong acid and strong base/ weak acid and weak base


9. 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


10. A plane mirror produces an image where?
At an equal distance behind it as the object is in front of the mirror
Mag and direction
It will be reduced the voltage produced by the resistor which means IR; E- IR
Attractive molecular forces acting between material surfaces in contact


11. What is usually conserved over oscillation periods?
NO; reduction-oxidation
Energy
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
Helium; 4


12. When looking at which combo of acids and bases will result in a solution with pH of 7 what do we look for?
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
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
Constant to overcome the heat of fusion (solid to liquid state)
P = F(v) = mg(v -terminal)


13. 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?
The current is the same
Its momentum is zero because velocity is zero; zero because of conservation of momentum
It will increase as well because they are directly related - only if pressure is kept constant
(density[p])(volume)


14. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
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
V/m or N/C
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


15. 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


16. 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


17. In general what is formed by an acid-base rxn?
A salt and water
When you have central atom with six ions on it
At an equal distance behind it as the object is in front of the mirror
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


18. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
Strong acid and strong base/ weak acid and weak base
Electrons from anode and battery
The force along the board to the normal force
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


19. What does the empirical formula show?
You look at what is being oxidized and reduced in the problem
Neutrons; atomic number
The lowest whole number ratio of moles of each element in a mole of a cmpd
[S][2S]^2 = 4S^3


20. What is sublimation?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Only temperature of the water bath
Isolating an atom from minerals by decomposing the minerals with an electric current
Going from solid to gas phase


21. Why does light travel slower in an optically dense medium than through a vacuum?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Positron emission


22. What happens if an atom undergoes positron decay or electron capture?
Add them together
Strong acid and strong base/ weak acid and weak base
The cross-sectional area through which the fluid flows
The mass number stays the number but the atomic number decreases by one - usually resulting in another element


23. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
From peak to peak
(+)
W = F(displacement)
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)


24. Heat from friction comes from what?
The nucleus gains a proton and no neutrons
That they are catalysts in the rxn because they react with the substrate and are reformed
Decreasing potential energy
Polar


25. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
Mv = mv
NO; reduction-oxidation
Strong acid and strong base/ weak acid and weak base
When HIn is turned into In- - which is dependent upon the pKa of the indicator


26. In order to guarantee a non-zero spin how many electrons are needed?
Momentum
An odd number
The lowest one
Gravity


27. 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?
It will be reduced the voltage produced by the resistor which means IR; E- IR
The number of electrons emitted
That they are catalysts in the rxn because they react with the substrate and are reformed
Mg


28. Equivalent mass is what?
Mass number stays the same but the atomic number increases
+/- 1/2
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
How strong a base is


29. Does the temperature of a water bath or amount of water in a water bath determines if a substance melts?
The path is longer on the inclined plane so it will take object longer to reach the bottom
Only temperature of the water bath
Negative
P = IV


30. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
The path is longer on the inclined plane so it will take object longer to reach the bottom
Helium; 4
The lowest one
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant


31. The probability of an X-ray emission event at a given wavelength is measured by what?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The particle's charge and the magnitude of the electric field
Its intensity in the spectrum
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


32. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Positron because this is known as positron decay/electron capture
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
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


33. When a falling mass is at terminal speed - what is the power expended by the air resistance?
The buoyant force on it; W = mg = pVg
P = F(v) = mg(v -terminal)
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
You look at what is being oxidized and reduced in the problem


34. What are the units of an electric field?
V/m or N/C
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
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
The nucleus gains a proton and no neutrons


35. If asked which electron configuration of an element is most stable which one do you choose?
Mass number stays the same but the atomic number increases
T = 2pi/angular velocity; v/r
Colligative; the number of solute particles present
The regular one


36. 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


37. When does red litmus paper turn blue?
The number of electrons emitted
That of static friction; there is a net accelerating force on the block once it starts to slide
The particle's charge and the magnitude of the electric field
In the presence of a base


38. The concentration of OH and H30 ions are approximately equal at what pH?
Gravity
7 always!!!
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
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


39. What is the doppler equation for wavelength and frequency?
Cathode; anode
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Going from solid to gas phase


40. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
You look at what is being oxidized and reduced in the problem
Energy
It can absorb light that lets other electrons fill those orbitals
-l to +l


41. The Ksp for a substance of AaBb is what?
B = pVg; density
Electron shell number
Positron because this is known as positron decay/electron capture
[A]^a[B]^b


42. 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


43. What energy conversion describes best what takes place in a battery-powered resistive circuit?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
V/m or N/C
How strong a base is
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors


44. How do you find wavelength if you known distance from adjacent crests and troughs?
Its twice that distance
They are directly proportional
That it is negative
Mag and direction


45. What direction do gravity and bouyancy work? What direction does water pressure work?
The particle's charge and the magnitude of the electric field
Accelerated by a higher voltage between the cathode and anode
Vertically; perpendicular to all surfaces
(+)


46. Hydrogen has what kind of standard oxidation or reduction potential?
Zero
-l to +l
How strong a base is
The lowest one


47. The square root of 10^anything is equal to what?
Constant to overcome the heat of fusion (solid to liquid state)
Half of the exponent
-l to +l
The volume of the ice cube or whatever it is


48. How do you find specific gravity of an object?
The volume of the ice cube or whatever it is
One mole of electric charge
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
Only temperature of the water bath


49. The visible spectrum ranges from ____ to _____
400 to 700 nm
The cross-sectional area through which the fluid flows
That it is negative
Only temperature of the water bath


50. What does spatial resolution refer to?
Ability to locate an event in space
H has a small atomic radius
No - it increases the speed at which the rxn reaches that equilibrium
Cathode; anode