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 law of conservation of linear momentum?
Mv = mv
The blood pressure in the leg is greater because the column between the arm and the leg has a hydrostatic pressure
Decreasing potential energy
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

2. What is Newton's Universal Law of Gravitation?
F = GMm/r^2
W = F(displacement)
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
Add them together

3. 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?
From peak to peak
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
It has a positive oxidation potential so it is easily oxidized
PbCO2 is less soluble than PbI - and PbI less soluble than PbSO4; CO2 - then I - then SO4

4. How do you find what is the limiting reagent? You can then use the moles of the limiting reagent to calculate what?
Going from solid to gas phase
Ease of polarizability of the molecule and thus increasing molecular weight of mass
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

5. The force on an electrical charge is what?
F =ma and F= qE
(+)
3+
Half of the exponent

6. If you have a decrease of pressure to which side of the equation is it equilibrium shifted towards? What about if you increase temperature?

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

7. 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
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Only temperature of the water bath
Ease of polarizability of the molecule and thus increasing molecular weight of mass

8. What kind of charge is on Al?
A salt and water
3+
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Ability to locate an event in space

9. 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?
Battery starts off chemical and creates an electrical current which creates thermal energy in the resistors
The element's mass number
W = F(displacement)
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

10. The square root of 10^anything is equal to what?
Going from solid to gas phase
It has a positive oxidation potential so it is easily oxidized
Half of the exponent
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces

11. What are the units of an electric field?
V/m or N/C
W = F(displacement)
Its intensity in the spectrum
When you have central atom with six ions on it

12. The boiling point of a solution is what type of property? Which means is depends only on what?
Light is absorbed and re-emitted by the atomic structure of the optically dense medium
Mg
Colligative; the number of solute particles present
Neutrons; atomic number

13. Is the work done by air resistance - positive or negative?
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
It's weight = mg; the work would be the weight times the distance fell
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Negative

14. The Ksp for a substance of AaBb is what?
It will increase as well because they are directly related - only if pressure is kept constant
There is the maximum amount of K and NO3 ions; crystals will precipitate out; common-ion effect
[A]^a[B]^b
+/- 1/2

15. What is the equation for bouyant force? What is p?
B = pVg; density
Mag and direction
Accelerated by a higher voltage between the cathode and anode
+/- 1/2

16. The coefficient of static friction is the ratio of what?
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
The force along the board to the normal force
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
It's weight = mg; h

17. 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 particle's charge and the magnitude of the electric field
Accelerated by a higher voltage between the cathode and anode
It will be reduced the voltage produced by the resistor which means IR; E- IR
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

18. What is the equation for a period (T)? What is the equation for angular velocity?
Energy
When electron falls from high energy to low energy level
Polar
T = 2pi/angular velocity; v/r

19. What is Avagadro's number regarding ions/mol?
Mv = mv
Liquid displaced by that object
Red
6.02 x 10^23 ions/mol

20. What is conserved in an inellastic collision?
(+)
Momentum
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
An odd number

21. When you are trying to calculate a galvanic cell's emf - what do you look at?
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R
When you have central atom with six ions on it
You look at what is being oxidized and reduced in the problem
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

22. Hydrogen has what kind of standard oxidation or reduction potential?
At an equal distance behind it as the object is in front of the mirror
It can absorb light that lets other electrons fill those orbitals
Zero
3+

23. 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

24. In PV=nRT - if temp increases what will happen to volume?
Ability to locate an event in space
Strong acid and strong base/ weak acid and weak base
When HIn is turned into In- - which is dependent upon the pKa of the indicator
It will increase as well because they are directly related - only if pressure is kept constant

25. Melting occurs at what type of temperature? Why?
Polar
It can absorb light that lets other electrons fill those orbitals
1000
Constant to overcome the heat of fusion (solid to liquid state)

26. 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

27. When does red litmus paper turn blue?
Its intensity in the spectrum
In the presence of a base
An odd number
Red

28. What is usually conserved over oscillation periods?
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
Helium; 4
Energy
0 Hz because they are traveling side by side at the same speed

29. 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
A positron or electron; when atomic number goes up you know an electron has been emitted
You look at what is being oxidized and reduced in the problem
That they are catalysts in the rxn because they react with the substrate and are reformed

30. The basicity constant Kb measures what?
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
It will be reduced the voltage produced by the resistor which means IR; E- IR
How strong a base is
1000

31. The volume of an object is equal to water?
The volume of the ice cube or whatever it is
When all the external forces = zero
Strong acid and strong base/ weak acid and weak base
Liquid displaced by that object

32. 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?
The cross-sectional area through which the fluid flows
Constant; stress/strain = (F/A)/ (change in L/L) = straight line withe positive slope that stays constant
The density of the water and volume of the lead object
V/m or N/C

33. In order to guarantee a non-zero spin how many electrons are needed?
0 Hz because they are traveling side by side at the same speed
Colligative: it depends on the number of solute molecules in a given volume of water
An odd number
That they are catalysts in the rxn because they react with the substrate and are reformed

34. The temperature of a metal will not increase above its melting point until what?
1) Young's Modulus 2) Shear Modulus 3) Bulk Modulus
Polar
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
The reaction between the base and water

35. What is weight equal to?
You should look for the two substances that appear to be equal in structure - with no structural differences (or as little as possible)
Polar
Mg
The force along the board to the normal force

36. 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?
The reaction between the base and water
Alkali metals = first column
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
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens

37. Can a catalyst shift equilibrium?
Add them together
No - it increases the speed at which the rxn reaches that equilibrium
Total internal reflection
It can also equal 'mg'; the compressive strength of a substance

38. How do you find specific gravity of an object?
How strong a base is
The density of the water and volume of the lead object
Accelerated by a higher voltage between the cathode and anode
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

39. What is the net result on a nucleus when you absorb a deuturon and emit a neutron?
The nucleus gains a proton and no neutrons
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting
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
Colligative: it depends on the number of solute molecules in a given volume of water

40. How do you find wavelength if you known distance from adjacent crests and troughs?
That they are catalysts in the rxn because they react with the substrate and are reformed
Red
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Its twice that distance

41. The concentration of OH and H30 ions are approximately equal at what pH?
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
7 always!!!
(+)
Positron emission

42. 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

43. When an element decreases its atomic number by one what is emitted?
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
They must balance
Positron because this is known as positron decay/electron capture
That it is negative

44. Kb is the equilibrium constant for what?
Sp^3
The reaction between the base and water
(density[p])(volume)
Density (gravitational constant) height

45. Pressure in a liquid is proportional to what? So why does this explain why blood pressure is greater in legs?
A saturated solution in which the aqueous ions are in equilibrium with the solid
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
The force along the board to the normal force
The element's mass number

46. What is one faraday equal to?
No - it increases the speed at which the rxn reaches that equilibrium
External components of the circuit
One mole of electric charge
That of static friction; there is a net accelerating force on the block once it starts to slide

47. A floating ice cube implies that it's weight is balanced by what?
When electron falls from high energy to low energy level
The buoyant force on it; W = mg = pVg
It's weight = mg; h
Its intensity in the spectrum

48. A pendulum moves under the influence of what?
Gravity
Positron emission
H has a small atomic radius
Colligative: it depends on the number of solute molecules in a given volume of water

49. In a rxn - how do you figure out which atom has the highest electron affinity?
Colligative: it depends on the number of solute molecules in a given volume of water
An odd number
400 to 700 nm
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

50. When a falling mass is at terminal speed - what is the power expended by the air resistance?
The lowest amt than any of the other cmpds with a higher carbon to oxygen ratio
P = F(v) = mg(v -terminal)
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
Half of the exponent