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?
Density (gravitational constant) height
No - it increases the speed at which the rxn reaches that equilibrium
NO; reduction-oxidation
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2


2. If you have circuit elements in parallel what is the same across them?
When electron falls from high energy to low energy level
One mole of electric charge
Voltage
Mass number stays the same but the atomic number increases


3. What direction do gravity and bouyancy work? What direction does water pressure work?
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
Vertically; perpendicular to all surfaces
They are directly proportional
Energy


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

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


5. What happens to a negatively charged particle put between two parallel plates?
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
Mass number stays the same but the atomic number increases
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
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


6. A floating ice cube implies that it's weight is balanced by what?
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 buoyant force on it; W = mg = pVg
Cathode; anode
The cross-sectional area through which the fluid flows


7. The range of pH in which a color change takes place in a titration depends on what?
The reaction between the base and water
L = wavelength/2 so L= (wavelength)(2)
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Attractive molecular forces acting between material surfaces in contact


8. Beta decay is the same as what?
Positron emission
The element's mass number
Mag and direction
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c


9. Friction is caused by what?
Attractive molecular forces acting between material surfaces in contact
Sp^3
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
Where an event took place


10. What kind of charge is on Al?
Mg
Accelerated by a higher voltage between the cathode and anode
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
3+


11. Always remember that velocity has ____ and ____
They must balance
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)
It can absorb light that lets other electrons fill those orbitals
Mag and direction


12. 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?
Attractive molecular forces acting between material surfaces in contact
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
It can also equal 'mg'; the compressive strength of a substance


13. 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
The reaction between the base and water
When electron falls from high energy to low energy level
Voltage


14. 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


15. The coefficient of kinetic friction is always lower than what? Therefore what?
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
That of static friction; there is a net accelerating force on the block once it starts to slide
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
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


16. The Ksp for a substance of AaBb is what?
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
Positron emission
Positron because this is known as positron decay/electron capture
[A]^a[B]^b


17. In radioactive decay the atomic number (A) and mass number (Z) must what?
They must balance
Mv = mv
That of static friction; there is a net accelerating force on the block once it starts to slide
6.02 x 10^23 ions/mol


18. If melting pt of a substance is 80 degrees - then what is the diff in time the substance melts when it is either placed in 100 degree test tube and 90 degree test tube?
Voltage
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
You look at what is being oxidized and reduced in the problem
Accelerated by a higher voltage between the cathode and anode


19. What kind of geometry is octahedral?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
No - it increases the speed at which the rxn reaches that equilibrium
When you have central atom with six ions on it
Electron shell number


20. The freezing point of an aqueous solution is what kind of property? What does this mean?
The mass number stays the number but the atomic number decreases by one - usually resulting in another element
B = pVg; density
Colligative: it depends on the number of solute molecules in a given volume of water
At an equal distance behind it as the object is in front of the mirror


21. What is the magnetic quantum number?
Polar
They do not differ
-l to +l
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)


22. 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 current is the same
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
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors


23. The square root of 10^anything is equal to what?
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Half of the exponent
Helium; 4
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)


24. So if you are given an equation and it gives you the E^o for both side equations seen in the big equation - what do you do with them?
T = 2pi/angular velocity; v/r
Total internal reflection
Add them together
Yes - if the particle's trail is equidistant between two adjacent anodes


25. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
Attractive molecular forces acting between material surfaces in contact
The lowest one
F = GMm/r^2
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


26. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
You look at what is being oxidized and reduced in the problem
The nucleus gains a proton and no neutrons
It decreases; the work done by the gas in expanding decreases its internal energy
It experiences a constant electric force of qE and will thus accelerate towards the positive plate


27. What type of acid and base would produce a pH closest to 7?
At an equal distance behind it as the object is in front of the mirror
Strong acid and strong base/ weak acid and weak base
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
From peak to peak


28. 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 height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Liquid displaced by that object
A positron or electron; when atomic number goes up you know an electron has been emitted


29. Hydrogen has what kind of standard oxidation or reduction potential?
Zero
Energy
7 always!!!
The number of electrons emitted


30. For a given flow rate - the speed of fluid flow is inversely proportional to what?
The cross-sectional area through which the fluid flows
A positron or electron; when atomic number goes up you know an electron has been emitted
V/m or N/C
External components of the circuit


31. How do you find length of time something is in flight? How do you find distance it traveled?
Only temperature of the water bath
T = (2h/g)^1/2; distance = vt
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
From peak to peak


32. How do you balance redox rxns?

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


33. 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?
[S][2S]^2 = 4S^3
Isolating an atom from minerals by decomposing the minerals with an electric current
Energy
Its momentum is zero because velocity is zero; zero because of conservation of momentum


34. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
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)
Mag and direction
Strong acid and strong base/ weak acid and weak base
NO; reduction-oxidation


35. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
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
Pascal (N*m^2)
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


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. The visible spectrum ranges from ____ to _____
The current is the same
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
Polar
400 to 700 nm


38. What are the units of an electric field?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Alkali metals = first column
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
V/m or N/C


39. What is newton's second law?
A constant force on a mass causes it to have a constant acceleration
0 Hz because they are traveling side by side at the same speed
P = IV
Energy


40. The total pressure of a solution is what? Give example.
1000
7 always!!!
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


41. What is usually conserved over oscillation periods?
Neutrons; atomic number
Energy
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 density of the water and volume of the lead object


42. What is the magnitude of the electric field produced by a point charge?
E = (kq)/r^2
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
A positron or electron; when atomic number goes up you know an electron has been emitted
Liquid displaced by that object


43. 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
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
The reaction between the base and water


44. What do electrolytic techniques involve?
Isolating an atom from minerals by decomposing the minerals with an electric current
The lowest one
6.02 x 10^23 ions/mol
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles


45. What is the angular momentum quantum number (l)? It is the same as what? What does an S orbital appear to look like? What would it's (l) be?
Strong acid and strong base/ weak acid and weak base
H = negative and S = positive
NO; reduction-oxidation
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


46. What is the relationship between P and n in PV=nRT?
Sp^3
They are directly proportional
When all the external forces = zero
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c


47. In order to guarantee a non-zero spin how many electrons are needed?
Sp^3
An odd number
Energy
A positron or electron; when atomic number goes up you know an electron has been emitted


48. If the source of sound and the listener are traveling side by side at the same speed - what will the change in freq heard by the listener be?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
0 Hz because they are traveling side by side at the same speed
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
You look at what is being oxidized and reduced in the problem


49. Beta decay is the emission of what? How do you know what it is the emission of?
Energy
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
180 degrees; when there is half a wave distance in phase between two waves
A positron or electron; when atomic number goes up you know an electron has been emitted


50. 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