Instructions:

• Answer 50 questions in 15 minutes.
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• 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. When the source of a sound is flying away from you what happens to the wavelengths from peak to peak?
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
F = GMm/r^2
They increase because you hear a lower frequency


2. Kb is the equilibrium constant for what?
Red
The reaction between the base and water
It's weight = mg; h
Only temperature of the water bath


3. A floating ice cube implies that it's weight is balanced by what?
E = (kq)/r^2
The buoyant force on it; W = mg = pVg
The current is the same
They must balance


4. Nuclear masses can be approximated from what?

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5. What is sublimation?
Accelerated by a higher voltage between the cathode and anode
It's weight = mg; the work would be the weight times the distance fell
400 to 700 nm
Going from solid to gas phase


6. The volume of an object is equal to water?
Liquid displaced by that object
Neutrons; atomic number
One that has more solute particles per liter of solution
Where an event took place


7. 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?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Its twice that distance
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
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)


8. A nearsighted person has what type of focal length? Thus what do we do to correct this?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Momentum
The lowest one
Polar


9. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
The cross-sectional area through which the fluid flows
It can also equal 'mg'; the compressive strength of a substance
Decreasing potential energy


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

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11. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
B = pVg; density
When HIn is turned into In- - which is dependent upon the pKa of the indicator
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
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting


12. Isotopes have diff number of ______ but same what?
Neutrons; atomic number
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
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
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens


13. When is a body in translational equilibrium?
6.02 x 10^23 ions/mol
The path is longer on the inclined plane so it will take object longer to reach the bottom
When all the external forces = zero
They are directly proportional


14. What is the equation for a period (T)? What is the equation for angular velocity?
The particle's charge and the magnitude of the electric field
The force along the board to the normal force
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
T = 2pi/angular velocity; v/r


15. If asked which electron configuration of an element is most stable which one do you choose?
L = wavelength/2 so L= (wavelength)(2)
The regular one
Energy
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


16. A plane mirror produces an image where?
Sp^3
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
6.02 x 10^23 ions/mol
At an equal distance behind it as the object is in front of the mirror


17. What direction do gravity and bouyancy work? What direction does water pressure work?
Gravity
Vertically; perpendicular to all surfaces
Its intensity in the spectrum
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


18. In general what is formed by an acid-base rxn?
Force times the distance over which the force acts
Negative
A salt and water
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles


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

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20. 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 lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
One mole of electric charge
Vertically; perpendicular to all surfaces


21. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
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
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
It can also equal 'mg'; the compressive strength of a substance


22. How do you balance redox rxns?

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23. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
Going from solid to gas phase
It will be reduced the voltage produced by the resistor which means IR; E- IR
Positive
That they are catalysts in the rxn because they react with the substrate and are reformed


24. How should the period of a waveform be calculated?
The buoyant force on it; W = mg = pVg
The element's mass number
The cross-sectional area through which the fluid flows
From peak to peak


25. 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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26. 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?
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
(density[p])(volume)
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
Add them together


27. The range of pH in which a color change takes place in a titration depends on what?
Mass number stays the same but the atomic number increases
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Decreasing potential energy
How strong a base is


28. What is the formula for the power supplied by a battery to accelerate an electron beam?
P = IV
Ease of polarizability of the molecule and thus increasing molecular weight of mass
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
W = F(displacement)


29. If both weight and bouyant force are dependent on g - that makes g independent of what?
Isolating an atom from minerals by decomposing the minerals with an electric current
P = IV
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
The volume of the ice cube or whatever it is


30. What if the circuit elements are in series?
Going from solid to gas phase
The current is the same
T = (2h/g)^1/2; distance = vt
It decreases; the work done by the gas in expanding decreases its internal energy


31. if lead is successively preciptated as PbSO4 - PbI - and PbCO2 - which is less soluble than which? Thus which anions will be precipitated first?
Liquid displaced by that object
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
3+


32. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
Going from solid to gas phase
Helium; 4
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio


33. 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
Isolating an atom from minerals by decomposing the minerals with an electric current
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces


34. What is the equation for pressure?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
The path is longer on the inclined plane so it will take object longer to reach the bottom
P = IV
Density (gravitational constant) height


35. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
It's weight = mg; the work would be the weight times the distance fell
Cathode; anode
Neutrons; atomic number
Where an event took place


36. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
From peak to peak
The lowest one
Electrons from anode and battery
The path is longer on the inclined plane so it will take object longer to reach the bottom


37. 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 force along the board to the normal force
The nucleus gains a proton and no neutrons
It has a positive oxidation potential so it is easily oxidized
Mg


38. How do you find length of time something is in flight? How do you find distance it traveled?
T = (2h/g)^1/2; distance = vt
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
B = pVg; density
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


39. What is Avagadro's number regarding ions/mol?
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
6.02 x 10^23 ions/mol
Ability to locate an event in space
NO; reduction-oxidation


40. How do you find 'g' from Newton's law of gravity?
NO; reduction-oxidation
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
No - it increases the speed at which the rxn reaches that equilibrium
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2


41. What is the equation for bouyant force? What is p?
Decreasing potential energy
B = pVg; density
Its intensity in the spectrum
No - it increases the speed at which the rxn reaches that equilibrium


42. Neither N2 or O2 have a permanent what? What does this mean?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
(density[p])(volume)
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The mass number stays the number but the atomic number decreases by one - usually resulting in another element


43. Half-sine wave shape is what kind of wavelength with regards to length?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
Colligative: it depends on the number of solute molecules in a given volume of water
L = wavelength/2 so L= (wavelength)(2)
External components of the circuit


44. What is Newton's Universal Law of Gravitation?
Energy
The number of electrons emitted
F = GMm/r^2
Attractive molecular forces acting between material surfaces in contact


45. A pendulum moves under the influence of what?
It can also equal 'mg'; the compressive strength of a substance
Gravity
The cross-sectional area through which the fluid flows
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


46. 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?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
It will be reduced the voltage produced by the resistor which means IR; E- IR
[S][2S]^2 = 4S^3
No - it increases the speed at which the rxn reaches that equilibrium


47. What happens if an atom undergoes positron decay or electron capture?
Faraday/electrons
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
The lowest one
One that has more solute particles per liter of solution


48. Acetic acid is a ______ solvent
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
Polar
Sp^3
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R


49. What type of acid and base would produce a pH closest to 7?
Strong acid and strong base/ weak acid and weak base
7 always!!!
Electron shell number
The lowest one


50. In a rxn - how do you figure out which atom has the highest electron affinity?
How strong a base is
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
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
When HIn is turned into In- - which is dependent upon the pKa of the indicator