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DSST Physical Sciences2

Subjects : dsst, science

Instructions:

Answer 50 questions in 15 minutes.
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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 kind of geometry is octahedral?
At an equal distance behind it as the object is in front of the mirror
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 you have central atom with six ions on it
It experiences a constant electric force of qE and will thus accelerate towards the positive plate

2. The force on an electrical charge is what?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
Attractive molecular forces acting between material surfaces in contact
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
F =ma and F= qE

3. What does spatial resolution refer to?
Its twice that distance
Ability to locate an event in space
The cross-sectional area through which the fluid flows
(+)

4. Thus is Zn (which has positive oxidation potential) reacts with HCl - will any rxn take place?
Yes because ionic zinc has oxidation of (2+) and Zn is easily oxidized so it will displace H and ZnCl2 will be formed
Momentum
A constant force on a mass causes it to have a constant acceleration
P = IV

5. The coefficient of kinetic friction is always lower than what? Therefore what?
[S][2S]^2 = 4S^3
Force times the distance over which the force acts
That of static friction; there is a net accelerating force on the block once it starts to slide
The density of the water and volume of the lead object

6. What do electrolytic techniques involve?
T = 2pi/angular velocity; v/r
Isolating an atom from minerals by decomposing the minerals with an electric current
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
In the presence of a base

7. When is a body in translational equilibrium?
It experiences a constant electric force of qE and will thus accelerate towards the positive plate
Colligative: it depends on the number of solute molecules in a given volume of water
Density (gravitational constant) height
When all the external forces = zero

8. Nuclear masses can be approximated from what?

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9. Kb is the equilibrium constant for what?
The height of the liquid above it ; blood pressure increases because of the force of gravity (P= (density)g(height)
The number of electrons emitted
The regular one
The reaction between the base and water

10. What is the equation for work done?
W = F(displacement)
P = F(v) = mg(v -terminal)
Isolating an atom from minerals by decomposing the minerals with an electric current
The element's mass number

11. Regarding M(OH)2 and you have solubility (S) - what would the Ksp be?
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
[S][2S]^2 = 4S^3
External components of the circuit
3+

12. For a given flow rate - the speed of fluid flow is inversely proportional to what?
It will be reduced the voltage produced by the resistor which means IR; E- IR
Neutrons; atomic number
The cross-sectional area through which the fluid flows
F =ma and F= qE

13. How do you find wavelength if you known distance from adjacent crests and troughs?
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
Its twice that distance
Zero

14. What is newton's second law?
E = (kq)/r^2
A constant force on a mass causes it to have a constant acceleration
That it is negative
Pascal (N*m^2)

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

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16. What is the relationship between P and n in PV=nRT?
One mole of electric charge
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
They are directly proportional
Attractive molecular forces acting between material surfaces in contact

17. Terminal voltage is provided to what?
F = GMm/r^2
Electrons from anode and battery
Force times the distance over which the force acts
External components of the circuit

18. What is different between an inclined plane and free fall?
Positron because this is known as positron decay/electron capture
Strong acid and strong base/ weak acid and weak base
T = (2h/g)^1/2; distance = vt
The path is longer on the inclined plane so it will take object longer to reach the bottom

19. The electrons emitted from cathode are replaced with what?
The nucleus gains a proton and no neutrons
When electron falls from high energy to low energy level
Mv = mv
Electrons from anode and battery

20. If any species is gotten rid of when combining two equations of chemical rxns together what can you conclude about those species?
Sp^3
That they are catalysts in the rxn because they react with the substrate and are reformed
Going from solid to gas phase
The mass number stays the number but the atomic number decreases by one - usually resulting in another element

21. What is the unit for Young's Modulus?
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
Its intensity in the spectrum
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
Pascal (N*m^2)

22. If you have longer wavelengths how is their freq and energy compared to shorter wavelengths?
The density of the water and volume of the lead object
P = IV
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous
Its intensity in the spectrum

23. Why does light travel slower in an optically dense medium than through a vacuum?
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
A constant force on a mass causes it to have a constant acceleration
No - it increases the speed at which the rxn reaches that equilibrium
Light is absorbed and re-emitted by the atomic structure of the optically dense medium

24. What is the formula for the power supplied by a battery to accelerate an electron beam?
That of static friction; there is a net accelerating force on the block once it starts to slide
Half of the exponent
Voltage
P = IV

25. The concentration of OH and H30 ions are approximately equal at what pH?
Constant to overcome the heat of fusion (solid to liquid state)
7 always!!!
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
F =ma and F= qE

26. 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?
They are directly proportional
It has a positive oxidation potential so it is easily oxidized
Find how many mol of Ni is available and CO3 available and see which one has lowest number and that's how many moles
Isolating an atom from minerals by decomposing the minerals with an electric current

27. Heat from friction comes from what?
When HIn is turned into In- - which is dependent upon the pKa of the indicator
Strong acid and strong base/ weak acid and weak base
The volume of the ice cube or whatever it is
Decreasing potential energy

28. What happens to the atomic number and atomic mass of an element that go under Beta decay or positron emission?
The force along the board to the normal force
Mass number stays the same but the atomic number increases
Attractive molecular forces acting between material surfaces in contact
C: series = 1/C + 1/C = 1/C; parallel = C + C = C R: series: R+R = R; parallel = 1/R + 1/R = 1/R

29. A plane mirror produces an image where?
[A]^a[B]^b
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
At an equal distance behind it as the object is in front of the mirror

30. The temperature of a metal will not increase above its melting point until what?
Neutrons; atomic number
The nucleus gains a proton and no neutrons
Where an event took place
Until all of it has been melted because energy is going into it to melt it not to change temperature during its melting

31. What direction do gravity and bouyancy work? What direction does water pressure work?
Momentum
Faraday/electrons
Vertically; perpendicular to all surfaces
Mv = mv

32. The coefficient of static friction is the ratio of what?
Vertically; perpendicular to all surfaces
Dipole moment; the attractive forces holding them together in liquid state are London or dispersion forces
A positron or electron; when atomic number goes up you know an electron has been emitted
The force along the board to the normal force

33. What is the spin projection quantum number?
They do not differ
Well F = GmM/R^2 and force = mg so equating those together g = GM/R^2
Pascal (N*m^2)
+/- 1/2

34. The visible spectrum ranges from ____ to _____
E = (kq)/r^2
Shorter than it should be so rays from a distant object form in front of retina; use divergent lens
400 to 700 nm
6.02 x 10^23 ions/mol

35. If temperature arises during a mixture what can you conclude about the enthalpy?
It will be reduced the voltage produced by the resistor which means IR; E- IR
NO; reduction-oxidation
They must balance
That it is negative

36. The basicity constant Kb measures what?
The cross-sectional area through which the fluid flows
3+
F =ma and F= qE
How strong a base is

37. What is the equation for pressure?
-l to +l
The nucleus gains a proton and no neutrons
Density (gravitational constant) height
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

38. Melting occurs at what type of temperature? Why?
T = (2h/g)^1/2; distance = vt
F = GMm/r^2
Neutrons; atomic number
Constant to overcome the heat of fusion (solid to liquid state)

39. 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?

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40. What is conserved in an inellastic collision?
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
Momentum
Sp^3
6.02 x 10^23 ions/mol

41. A pendulum moves under the influence of what?
It will increase as well because they are directly related - only if pressure is kept constant
A constant force on a mass causes it to have a constant acceleration
Gravity
[A]^a[B]^b

42. Acetic acid is a ______ solvent
Polar
The cmpd without the O cannot donate H's like alcohol can to form H bonds with water
It has a positive oxidation potential so it is easily oxidized
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

43. Hydrogen has what kind of standard oxidation or reduction potential?
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
Helium; 4
Mass number stays the same but the atomic number increases
Zero

44. What kind of metals react violently with water?
Alkali metals = first column
The number of electrons emitted
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
It will increase as well because they are directly related - only if pressure is kept constant

45. What is the magnitude of the electric field produced by a point charge?
The particle's charge and the magnitude of the electric field
It can also equal 'mg'; the compressive strength of a substance
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
E = (kq)/r^2

46. In a rxn - how do you figure out which atom has the highest electron affinity?
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
At an equal distance behind it as the object is in front of the mirror
Alkali metals = first column
Electrons from anode and battery

47. How many mL is in one liter?
Ease of polarizability of the molecule and thus increasing molecular weight of mass
A salt and water
Mg
1000

48. 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?
A constant force on a mass causes it to have a constant acceleration
The density of the water and volume of the lead object
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
Their freq is smaller and energy is smaller; when wavelength is smaller freq is larger and higher energy = more dangerous

49. What type of acid and base would produce a pH closest to 7?
Pascal (N*m^2)
(+)
Strong acid and strong base/ weak acid and weak base
7 always!!!

50. In general what is formed by an acid-base rxn?
No - it increases the speed at which the rxn reaches that equilibrium
The nucleus gains a proton and no neutrons
A salt and water
The cross-sectional area through which the fluid flows