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B1 Modules > B1 M2 Physics > Flashcards

B1 M2 Physics Flashcards

1
Q

What are the smallest particles of matter

A

Atoms

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2
Q

Can atoms be created or destroyed during chemical reactions

A

no

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3
Q

What is the centre of an atom called

A

The nucleus

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4
Q

What 2 substances make up the nucleus

A

Protons and Neutrons

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5
Q

What would indicate the mass of an atom

A

Number of protons and neutrons

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6
Q

What is the simplest atom

A

Hydrogen

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7
Q

What is a molecule

A

A combination of two or more atoms

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8
Q

What is a compound

A

A combination of atoms from two or more different elements

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9
Q

What charge do protons have

A

Positive

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10
Q

What charge do neutrons have

A

They are neither positive or negative

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11
Q

What is the smallest sub atomic particle in an atom

A

Electrons

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12
Q

What is an element

A

Consists of only one kind of atom

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13
Q

What is chemical synthesis

A

The name given to the purposeful execution of chemical reactions to obtain a compound

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14
Q

The substance or substances initially involved in a chemical reaction are called

A

Reactants or Reagents

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15
Q

What is sometimes added to a chemical reaction to increase the rate of reaction

A

A catalyst

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16
Q

What is used to decrease rate of chemical reactions

A

Inhibitors

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17
Q

What is an atomic number traditionally represented by

A

The letter Z

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18
Q

What is an isotope

A

Atoms of the same element with different numbers of neutrons

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19
Q

What are the rules around electron shells

A

The shells are lettered from inner most (K) to outer most (Q)

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20
Q

How many electrons are in shells K,L,M,N

A 
K= 2
L= 8
M= 18
N= 32
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21
Q

What us Pauli’s exclusion principle

A

2nsquared (n=1,n=2,n=3)

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22
Q

What is an Ionised atom

A

When an atom looses or gains an electron

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23
Q

What is a Cation

A

A positively charged ion

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24
Q

What is a Anion

A

A negatively charged ion

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25
Q

What is covalent bonding

A

Where electrons are shared to form molecules

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26
Q

What are Allotropes

A

Is the property of some chemicals being able to exist in two or more different forms

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27
Q

What is plasma

A

Typically an ionised gas

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28
Q

What is Kinetic particle theory

A

Explains the properties of different states of matter. Solid liquid and gasses are arranged differently and move in a different way

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29
Q

What are the properties of acids

A
  • Liquids
  • Solutions of compounds in water
  • Tasta sour
  • Turn blue litmus paper red
  • Usually react with metals to form salts
  • Have a PH less than 7
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30
Q

What are the properties of Alkalis

A
  • Feel soapy to touch
  • They can burn the skin
  • Turn red litmus paper blue
  • ## Taste bitter
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31
Q

What is the SI unit of mass

A

KG

32
Q

What is a vector quantity

A

Vectors has both size and direction

33
Q

What is newtons second law

A

F=MA

34
Q

What is the lever arm/moment equasion

A

Moment=FD

35
Q

What is the equation for torque

A

Torque=Force x Distance

36
Q

What is the CofG equation

A

CG = Total Oment/Total mass

37
Q

What is a Scalar Quantity

A

Wheras a vector quantity is defined by its magnitude and direction a scalar quantity is described by its magnitude alone

38
Q

Give examples of vector quantities

A

Displacement, Velocity, acceleration and force

39
Q

A structure can be divided into 3 individual elements when loaded. What are they

A

Beams, Struts and ties

40
Q

A member subject to bending is known as

A

A beam

41
Q

A member subject to compression is known as

A

A Strut

42
Q

A member subject to tension is known as a

A

Tie

43
Q

What are the two basic structural stresses that an aircraft is subjected to

A
  • Tension

- Compression

44
Q

What is the definition of Tension

A

Is a primary stress trying to pull a body apart

45
Q

What is the definition of compression

A

Is a primary stress trying to squeeze a part together

46
Q

What is the definition of shear

A

Shear forces try to slide a body apart i.e a rivet in an aircraft skin

47
Q

What is the definition of torsion

A

A twisting force

48
Q

What is the equation for stress

A

Stress = Force/Area

49
Q

What is the equation for strain

A

Strain = Deformation of member/orginal length

50
Q

What is the purpose of a strut

A

A strut is designed to resist longitudinal compression

51
Q

What is tensile strength

A

Ability of a material to resist breaking under force (stretching)

52
Q

Evaporation

A

Liquid to gas

53
Q

Condensation

A

Gas to liquid

54
Q

Melting

A

Solid to liquid

55
Q

What is Sublimation

A

Solids becoming gasses with out becoming liquids first

56
Q

What is Deposition

A

When a Gas becomes a Solid with out becoming liquid first

57
Q

What is an Isobar

A

Places of equal atmospheric pressure

58
Q

What is a Barometer used for

A

To measure atmospheric pressure

59
Q

What is used to measure humidity

A

A hygrometer

60
Q

What is Pascals law

A

Pressure in a fluid acts equally in all directions

61
Q

What is Archimedes principle

A

A body submerged in a liquid displaces a volume of water equal to its own volume

62
Q

Forces passing through a common point are said to be

A

Concurrent

63
Q

The CofG of a triangular plate is at the intersection of

A

Medians from a vertex to the opposite side

64
Q

The CofG of a triangle is

A

1/3 of the median of the base

65
Q

The acceleration of a body which moves with a simple harmonic motion (SHM) is

A

Always directed towards a fixed point in its path

66
Q

The number of radians in a semicircle is

A

n (Pie)

67
Q

What is the best absober of thermal radiation

A

A dull black surface

68
Q

Worn barings in a gyroscope will cause

A

Real drift

69
Q

Procession in a gyro is

A

Proportional to the magnitude of torque applied

70
Q

What units does specific gravity have

A

Specific gravity has no units

71
Q

Gauge pressure is

A

absoloute pressure - atmospheric pressure

72
Q

What equation is used to convert farrenheight to celcius

A

C=5/9 x (f-32)

73
Q

A change of 1 degrees celcius is a change of what in farrenheight

A

1.8 degrees

74
Q

An ideal material to be used for a heat exchanger will have a

A

High specific heat capacity and high conduction

75
Q

Heat is measured in

A

Joules

76
Q

Lasers which use source of light?

A

Coherant

77
Q

The velocity of sound in air is affected by

A

Air temperature

B1 Modules (19 decks)

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