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. In PV=nRT - if temp increases what will happen to volume?
It will increase as well because they are directly related - only if pressure is kept constant
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
From peak to peak
P = IV


2. How do you find specific gravity of an object?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Where an event took place
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 particle's charge and the magnitude of the electric field


3. Friction is caused by what?
Attractive molecular forces acting between material surfaces in contact
Positron because this is known as positron decay/electron capture
Positive
That they are catalysts in the rxn because they react with the substrate and are reformed


4. What is the hybridization of oxygen in water and other oxygens similar to water with two bonds and two lone pairs of electrons?
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
Sp^3
The reaction between the base and water
400 to 700 nm


5. Kb is the equilibrium constant for what?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
The reaction between the base and water
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
E = (kq)/r^2


6. What is the equation for a period (T)? What is the equation for angular velocity?
0 Hz because they are traveling side by side at the same speed
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
Positive
T = 2pi/angular velocity; v/r


7. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
Total internal reflection
They do not differ
6.02 x 10^23 ions/mol
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)


8. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
NO; reduction-oxidation
L = wavelength/2 so L= (wavelength)(2)
The path is longer on the inclined plane so it will take object longer to reach the bottom


9. 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?
You look at what is being oxidized and reduced in the problem
B = pVg; density
The density of the water and volume of the lead object
Electron shell number


10. What is Avagadro's number regarding ions/mol?
In the presence of a base
6.02 x 10^23 ions/mol
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
A salt and water


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

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


12. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
Faraday/electrons
It decreases; the work done by the gas in expanding decreases its internal energy
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Isolating an atom from minerals by decomposing the minerals with an electric current


13. The Ksp for a substance of AaBb is what?
Alkali metals = first column
Colligative: it depends on the number of solute molecules in a given volume of water
[A]^a[B]^b
One that has more solute particles per liter of solution


14. What type of acid and base would produce a pH closest to 7?
Strong acid and strong base/ weak acid and weak base
Ability to locate an event in space
3+
It will be reduced the voltage produced by the resistor which means IR; E- IR


15. What happens to a negatively charged particle put between two parallel plates?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Electron shell number
No - it increases the speed at which the rxn reaches that equilibrium
From peak to peak


16. What is the law of conservation of linear momentum?
It will be reduced the voltage produced by the resistor which means IR; E- IR
Positron emission
It's weight = mg; h
Mv = mv


17. In a galvanic and electrolytic cell - reduction of an ion occurs where? Oxidation of an ion occurs where?
Momentum
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
Positron because this is known as positron decay/electron capture
Cathode; anode


18. 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


19. 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
Total internal reflection
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
The reaction between the base and water


20. What is the amt of energy that a frictional force generates?
The reaction between the base and water
T = 2pi/angular velocity; v/r
Force times the distance over which the force acts
The nucleus gains a proton and no neutrons


21. 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?
How strong a base is
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
It has a positive oxidation potential so it is easily oxidized


22. Melting occurs at what type of temperature? Why?
Constant to overcome the heat of fusion (solid to liquid state)
The regular one
The buoyant force on it; W = mg = pVg
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4


23. Why does light travel slower in an optically dense medium than through a vacuum?
The lowest one
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
7 always!!!
Its twice that distance


24. In radioactive decay the atomic number (A) and mass number (Z) must what?
They must balance
0 Hz because they are traveling side by side at the same speed
That it is negative
An odd number


25. 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
P = F(v) = mg(v -terminal)
Positron emission
In the presence of a base


26. Hydrogen has what kind of standard oxidation or reduction potential?
They do not differ
Its twice that distance
V/m or N/C
Zero


27. In a rxn - how do you figure out which atom has the highest electron affinity?
Ability to locate an event in space
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
The particle's charge and the magnitude of the electric field
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


28. Why are bonds between H and another atom shorter compared to most?
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
H has a small atomic radius
It will be reduced the voltage produced by the resistor which means IR; E- IR
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


29. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Helium; 4
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
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
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors


30. The temperature of a metal will not increase above its melting point until what?
The volume of the ice cube or whatever it is
The element's mass number
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Faraday/electrons


31. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
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
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Where an event took place
In the presence of a base


32. Heat from friction comes from what?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Decreasing potential energy
Add them together
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water


33. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The cross-sectional area through which the fluid flows
Red
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)
B = pVg; density


34. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
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
It has a positive oxidation potential so it is easily oxidized
B = pVg; density
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)


35. What is the doppler equation for wavelength and frequency?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
The reaction between the base and water


36. Terminal voltage is provided to what?
The regular one
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
T = (2h/g)^1/2; distance = vt
External components of the circuit


37. The probability of an X-ray emission event at a given wavelength is measured by what?
That of static friction; there is a net accelerating force on the block once it starts to slide
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
A constant force on a mass causes it to have a constant acceleration
Its intensity in the spectrum


38. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Density (gravitational constant) height
Liquid displaced by that object
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


39. Young's modulus is a ________ for a material. What is it's ratio? What would a graph of it look like?
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
It will be reduced the voltage produced by the resistor which means IR; E- IR
6.02 x 10^23 ions/mol
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant


40. 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
+/- 1/2
A saturated solution in which the aqueous ions are in equilibrium with the solid
The density of the water and volume of the lead object


41. A pendulum moves under the influence of what?
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
Gravity
The element's mass number
Electron shell number


42. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
Mass number stays the same but the atomic number increases
They do not differ
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors


43. 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


44. 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


45. What is conserved in an inellastic collision?
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
It will increase as well because they are directly related - only if pressure is kept constant
B = pVg; density
Momentum


46. What is one faraday equal to?
Pascal (N*m^2)
It can absorb light that lets other electrons fill those orbitals
One mole of electric charge
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


47. What is the equation for pressure?
Only temperature of the water bath
Vertically; perpendicular to all surfaces
Density (gravitational constant) height
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4


48. 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


49. How do you find the equiv capacitance of capacitors in series and parallel? What about if you are trying to find equivalent resistance?
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
V/m or N/C
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
Light is absorbed and re-emitted by the atomic structure of the optically dense medium


50. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
P = F(v) = mg(v -terminal)
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed