Test your basic knowledge |

DSST Physical Sciences2

Subjects : dsst, science

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. What is the unit for Young's Modulus?
Pascal (N*m^2)
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Mag and direction
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

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?
-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)
The reaction between the base and water
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure

3. 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?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
The density of the water and volume of the lead object
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

4. The force on an electrical charge is what?
Isolating an atom from minerals by decomposing the minerals with an electric current
When all the external forces = zero
F =ma and F= qE
They must balance

5. Considering the answer in the last slide - what kind of a solution would have a lower freezing pt?
Positron because this is known as positron decay/electron capture
Decreasing potential energy
One that has more solute particles per liter of solution
Energy

6. Terminal voltage is provided to what?
P = F(v) = mg(v -terminal)
That they are catalysts in the rxn because they react with the substrate and are reformed
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
External components of the circuit

7. The boiling point of a solution is what type of property? Which means is depends only on what?
An odd number
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
Colligative; the number of solute particles present
The particle's charge and the magnitude of the electric field

8. A plane mirror produces an image where?
P = F(v) = mg(v -terminal)
At an equal distance behind it as the object is in front of the mirror
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
The buoyant force on it; W = mg = pVg

9. Isotopes have diff number of ______ but same what?
How strong a base is
Neutrons; atomic number
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Zero

10. 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
Total internal reflection
-l to +l
6.02 x 10^23 ions/mol

11. What happens to a negatively charged particle put between two parallel plates?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Decreasing potential energy
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

12. The closer the spacing of the anode wire - the better one can specify what?
Colligative: it depends on the number of solute molecules in a given volume of water
Where an event took place
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 buoyant force on it; W = mg = pVg

13. The number of incident photons on the cathode affect what?
The lowest whole number ratio of moles of each element in a mole of a cmpd
It's weight = mg; h
The number of electrons emitted
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

14. What is conserved in an inellastic collision?
Electron shell number
Momentum
Energy
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant

15. Beta decay is the same as what?
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
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4
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
Positron emission

16. What direction do gravity and bouyancy work? What direction does water pressure work?
Vertically; perpendicular to all surfaces
Only temperature of the water bath
3+
Liquid displaced by that object

17. The range of pH in which a color change takes place in a titration depends on what?
3+
They increase because you hear a lower frequency
When HIn is turned into In- - which is dependent upon the pKa of the indicator
L = wavelength/2 so L= (wavelength)(2)

18. 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?
The lowest one
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
0 Hz because they are traveling side by side at the same speed
One mole of electric charge

19. How would you find rate of rxn from pH 1 to pH2?
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)
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
Half of the exponent
Liquid displaced by that object

20. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
Negative
The Ka or Kb that has an exponent closest to 7 because pKa + pKb = pKw and pKw = 14
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
Alkali metals = first column

21. What gas is evolved when copper is placed in a nitric acid (HNO3) solution? This is what type of rxn?
The buoyant force on it; W = mg = pVg
+/- 1/2
The reaction between the base and water
NO; reduction-oxidation

22. What is the formula for the power supplied by a battery to accelerate an electron beam?
P = IV
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
1000
Positive

23. What is newton's second law?
A constant force on a mass causes it to have a constant acceleration
Positive
It will be reduced the voltage produced by the resistor which means IR; E- IR
3+

24. Strength of dispersion force increases with what?
The force along the board to the normal force
One mole of electric charge
Ease of polarizability of the molecule and thus increasing molecular weight of mass
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

25. If temperature arises during a mixture what can you conclude about the enthalpy?
(+)
That it is negative
Liquid displaced by that object
An odd number

26. The temperature of a metal will not increase above its melting point until what?
P = IV
They increase because you hear a lower frequency
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Negative

27. What is the equation for work done?
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
Its intensity in the spectrum
W = F(displacement)
Pascal (N*m^2)

28. Why is it important that the materials used as scintillators are nearly transparent to the wavelength of light they emit?
Faraday/electrons
Half of the exponent
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
180 degrees; when there is half a wave distance in phase between two waves

29. What is the doppler equation for wavelength and frequency?
Attractive molecular forces acting between material surfaces in contact
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Density (gravitational constant) height
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

30. Melting occurs at what type of temperature? Why?
Neutrons; atomic number
Constant to overcome the heat of fusion (solid to liquid state)
That they are catalysts in the rxn because they react with the substrate and are reformed
One that has more solute particles per liter of solution

31. 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

32. In radioactive decay the atomic number (A) and mass number (Z) must what?
Its twice that distance
E = (kq)/r^2
They must balance
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

33. If the equation says that the E^o has (-) voltage when being reduced - but it is being oxidized in the problem - what does the voltage then become?
Where an event took place
H = negative and S = positive
It will increase as well because they are directly related - only if pressure is kept constant
(+)

34. The concentration of OH and H30 ions are approximately equal at what pH?
7 always!!!
Mv = mv
It will be reduced the voltage produced by the resistor which means IR; E- IR
It has a positive oxidation potential so it is easily oxidized

35. The free energy change (G) must be negative when what?
H = negative and S = positive
It can absorb light that lets other electrons fill those orbitals
You look at what is being oxidized and reduced in the problem
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

36. When is a body in translational equilibrium?
At an equal distance behind it as the object is in front of the mirror
When all the external forces = zero
The current is the same
Mass number stays the same but the atomic number increases

37. A nearsighted person has what type of focal length? Thus what do we do to correct this?
0 Hz because they are traveling side by side at the same speed
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
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
Constant to overcome the heat of fusion (solid to liquid state)

38. The volume of an object is equal to water?
H has a small atomic radius
The current is the same
Cathode; anode
Liquid displaced by that object

39. 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

40. How many mL is in one liter?
F =ma and F= qE
External components of the circuit
1000
W = F(displacement)

41. What does the empirical formula show?
The lowest whole number ratio of moles of each element in a mole of a cmpd
From peak to peak
It will be reduced the voltage produced by the resistor which means IR; E- IR
T = 2pi/angular velocity; v/r

42. When an element decreases its atomic number by one what is emitted?
When all the external forces = zero
Voltage
Energy
Positron because this is known as positron decay/electron capture

43. An alpha particle can also be assumed to be what element? What is the mass number of Helium?
Polar
Density (gravitational constant) height
They do not differ
Helium; 4

44. Hydrogen has what kind of standard oxidation or reduction potential?
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
400 to 700 nm
Zero
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

45. Why are bonds between H and another atom shorter compared to most?
A salt and water
H has a small atomic radius
Momentum
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

46. In order to increase the kinetic energy of electrons - they must be what?
Zero
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Total internal reflection
Accelerated by a higher voltage between the cathode and anode

47. Why would a solution with unfilled orbitals be responsible for turning a solution a certian color?
How strong a base is
It can absorb light that lets other electrons fill those orbitals
The current is the same
Electrons from anode and battery

48. 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

49. What kind of charge is on Al?
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
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
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
3+

50. What kind of geometry is octahedral?
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
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
When you have central atom with six ions on it