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. 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?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
F =ma and F= qE
How strong a base is
Neutrons; atomic number

2. What is the relationship between P and n in PV=nRT?
Liquid displaced by that object
They are directly proportional
Density (gravitational constant) height
Gravity

3. As a balloon rises in a tank of water what happens to the temperature inside it? Why would this happen?
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
A saturated solution in which the aqueous ions are in equilibrium with the solid
It decreases; the work done by the gas in expanding decreases its internal energy
V/m or N/C

4. The electrons emitted from cathode are replaced with what?
Its intensity in the spectrum
Electrons from anode and battery
Yes - if the particle's trail is equidistant between two adjacent anodes
7 always!!!

5. How do you find specific gravity of an object?
A saturated solution in which the aqueous ions are in equilibrium with the solid
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
When HIn is turned into In- - which is dependent upon the pKa of the indicator
It has a positive oxidation potential so it is easily oxidized

6. What does the empirical formula show?
The path is longer on the inclined plane so it will take object longer to reach the bottom
The current is the same
Energy
The lowest whole number ratio of moles of each element in a mole of a cmpd

7. What does specific heat of a substance tell you? Thus what does a higher specific heat tell you?
[A]^a[B]^b
P = IV
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
E = (kq)/r^2

8. 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

9. Half-sine wave shape is what kind of wavelength with regards to length?
They do not differ
The particle's charge and the magnitude of the electric field
L = wavelength/2 so L= (wavelength)(2)
The volume of the ice cube or whatever it is

10. 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

11. What kind of geometry is octahedral?
[A]^a[B]^b
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
0 Hz because they are traveling side by side at the same speed
When you have central atom with six ions on it

12. If something is very toxic to a human - what Ksp value should it have for it to be the safest?
They must balance
The lowest one
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)
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous

13. 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

14. The force on an electrical charge is what?
You look at what is being oxidized and reduced in the problem
F =ma and F= qE
Liquid displaced by that object
Alkali metals = first column

15. If you have circuit elements in parallel what is the same across them?
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
400 to 700 nm
Voltage
An odd number

16. What kind of charge is on Al?
It will be reduced the voltage produced by the resistor which means IR; E- IR
3+
A positron or electron; when atomic number goes up you know an electron has been emitted
Density (gravitational constant) height

17. 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
Going from solid to gas phase
Helium; 4

18. How do the final velocities differ if a sphere is dropped from a distance rather than rolled down an inclined plane?
They do not differ
An odd number
From peak to peak
The reaction between the base and water

19. When an element decreases its atomic number by one what is emitted?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
Positron because this is known as positron decay/electron capture
At an equal distance behind it as the object is in front of the mirror

20. What is the formula for the power supplied by a battery to accelerate an electron beam?
P = IV
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
It decreases; the work done by the gas in expanding decreases its internal energy
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

21. The freezing point of an aqueous solution is what kind of property? What does this mean?
(+)
H = negative and S = positive
It will be reduced the voltage produced by the resistor which means IR; E- IR
Colligative: it depends on the number of solute molecules in a given volume of water

22. 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
At an equal distance behind it as the object is in front of the mirror
That it is negative
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

23. 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?
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
The buoyant force on it; W = mg = pVg
How strong a base is
It will increase as well because they are directly related - only if pressure is kept constant

24. What is the equation for work done?
W = F(displacement)
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
It decreases; the work done by the gas in expanding decreases its internal energy
Energy

25. 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?
Helium; 4
They are directly proportional
0 Hz because they are traveling side by side at the same speed
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant

26. Why does light travel slower in an optically dense medium than through a vacuum?
Force times the distance over which the force acts
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Its intensity in the spectrum
(+)

27. What color is above 656 nm?
Red
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
P = F(v) = mg(v -terminal)
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors

28. In order to increase the kinetic energy of electrons - they must be what?
When all the external forces = zero
Sp^3
Its twice that distance
Accelerated by a higher voltage between the cathode and anode

29. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
The volume of the ice cube or whatever it is
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
The nucleus gains a proton and no neutrons
+/- 1/2

30. Can a catalyst shift equilibrium?
Neutrons; atomic number
It can absorb light that lets other electrons fill those orbitals
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
No - it increases the speed at which the rxn reaches that equilibrium

31. Isotopes have diff number of ______ but same what?
It will increase as well because they are directly related - only if pressure is kept constant
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Neutrons; atomic number
The volume of the ice cube or whatever it is

32. Acetic acid is a ______ solvent
Polar
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
180 degrees; when there is half a wave distance in phase between two waves
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

33. Beta decay is the same as what?
One mole of electric charge
W = F(displacement)
Density (gravitational constant) height
Positron emission

34. If you are given density and volume how do you find mass?
Constant to overcome the heat of fusion (solid to liquid state)
(density[p])(volume)
Decreasing potential energy
F = GMm/r^2

35. Strength of dispersion force increases with what?
A constant force on a mass causes it to have a constant acceleration
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
Ease of polarizability of the molecule and thus increasing molecular weight of mass
They increase because you hear a lower frequency

36. The Ksp for a substance of AaBb is what?
H has a small atomic radius
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
[A]^a[B]^b
It's weight = mg; the work would be the weight times the distance fell

37. A floating ice cube implies that it's weight is balanced by what?
Cathode; anode
Accelerated by a higher voltage between the cathode and anode
The nucleus gains a proton and no neutrons
The buoyant force on it; W = mg = pVg

38. The basicity constant Kb measures what?
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
How strong a base is
Its momentum is zero because velocity is zero; zero because of conservation of momentum

39. Neither N2 or O2 have a permanent what? What does this mean?
Energy
Decreasing potential energy
H = negative and S = positive
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

40. What is the magnetic quantum number?
-l to +l
+/- 1/2
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
The volume of the ice cube or whatever it is

41. Terminal voltage is provided to what?
The element's mass number
External components of the circuit
Sp^3
A constant force on a mass causes it to have a constant acceleration

42. Hydrogen has what kind of standard oxidation or reduction potential?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Zero
The lowest whole number ratio of moles of each element in a mole of a cmpd
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

43. What is sublimation?
From peak to peak
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Going from solid to gas phase
Add them together

44. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
Attractive molecular forces acting between material surfaces in contact
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
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
The lowest whole number ratio of moles of each element in a mole of a cmpd

45. What is Avagadro's number regarding ions/mol?
+/- 1/2
Add them together
6.02 x 10^23 ions/mol
How strong a base is

46. A cmpd with the lowest carbon to oxygen ratio will require how much oxygen for combustion?
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
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
Alkali metals = first column

47. What is conserved in an inellastic collision?
Its momentum is zero because velocity is zero; zero because of conservation of momentum
How strong a base is
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c
Momentum

48. How do you find 'g' from Newton's law of gravity?
Electron shell number
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
Helium; 4
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2

49. What is the doppler equation for wavelength and frequency?
A salt and water
Ease of polarizability of the molecule and thus increasing molecular weight of mass
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
Wavelength: (change in y)/(y) = v/c frequency: (change in f)/(f) = -v/c

50. 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?
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 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
Faraday/electrons