RT 205 HW1

Question 1

Smallest part a substance and still retain the properties of that substance

Answer 1

Atom

Question 2

The small dense center of an atom, which contain nucleons (neutrons and protons)

Answer 2

Nucleus

Question 3

Radius of an atomic nucleus

Answer 3

10^-14m

Question 4

Radius of an atom

Answer 4

10^-10m

Question 5

Equal to the number of protons and neutrons in an atom

Answer 5

Mass number

Question 6

Equal to the number of protons in an atom, and also equal to the number of electrons in a stable atom.

Answer 6

Atomic number

Question 7

AMU in proton

Answer 7

1.00728

Question 8

AMU in neutron

Answer 8

1.00867

Question 9

AMU in electron

Answer 9

0.000548

Question 10

Proton: Weight in Kg

Answer 10

1.672x10^-27 Kg

Question 11

Neutron: Weight in Kg

Answer 11

1.674x10^-27 Kg

Question 12

Electron: Weight in Kg

Answer 12

9.11x10^-31 Kg

Question 13

When Z=differerent, N=Same

Answer 13

Isotone

Question 14

When N=different, Z=Same

Answer 14

Isotope

Question 15

When Z=Different, A=Same

Answer 15

Isobar

Question 16

When A=Same, Z=Same in a metastable state

Answer 16

Isomer

Question 17

1 AMU = ___________ MeV

Answer 17

931.5 MeV

Question 18

The mass of a single atom

Answer 18

Atomic Weight

Question 19

The amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles.

Answer 19

Mass Defect

Question 20

The energy required to separate a single particle or group of particles from a molecule, atom, or nucleus.

Answer 20

Binding Energy

Question 21

The emission or transfer of radiant energy as particles, electromagnetic waves

Answer 21

Radiation

Question 22

A stream of atomic or subatomic particles that may be charged positively or negatively or not at all.

Answer 22

Particulate Radiation

Question 23

Any of the atomic particles that compose matter and energy, such as protons, neutrons, and electrons

Answer 23

Elementary particles

Question 24

Velocity= Frequency x Wavelength

Answer 24

Wave Model

Question 25

High frequency, high energy EM radiation interacts like a particle when contracting matter. Photon energy and frequency are directly related.

Answer 25

Quantum Model

Question 26

The spontaneous emmission of radiation, either directly from unstable nuclei, or as a consequence of a nuclear reaction

Answer 26

Radioactivity

Question 27

Formula to convert degree Celcius to Farenheit

Answer 27

F=1.8(C)+32

Question 28

Formula to convert degree Farenheit to Celcius

Answer 28

C= (F-32)*1.8

Question 29

If 1 KV = 1000 V, how many volts are equal to 74 kV

Answer 29

74,000 V

Question 30

How many elements in the periodic table of elements?

Answer 30

118

Question 31

How many elements are natural in the P.T.E.?

Answer 31

92

Question 32

Define Force and give derived and SI Units

Answer 32

Anything that changes an objects’s motion
F= mass x acceleration
= Kg m/s^2
= N

Question 33

Define Work and give derived and SI Units

Answer 33

Measures the change a force has on an object’s position or motion
W= Force x distance
= N x m
= kg m/s^2 x m

Question 34

Define Power and give derived and SI Units

Answer 34

Rate at which work is done
P= Weight / time
  = Kg m^2/s^2/s
  = Kg m^2/s^3
  = Watt (W)

Question 35

Define Energy and give derived and SI units

Answer 35

The ability to do work

Derived = E , SI= J

Question 36

How many Joules in 1 eV?

Answer 36

1.602 X 10^-19 J

Question 37

A substance that cannot be split into simpler substances

Answer 37

Element

Question 38

The type of valence when an atom donates an electron

Answer 38

+ valence

Question 39

The type of valence when an atom gives or accepts an electron

Answer 39

• valence

Question 40

The giving and accepting of electrons between atoms

Answer 40

Ionic Bond

Question 41

Atoms that share the outermost shell

Answer 41

Non-Polar Covalent Bonds

Question 42

Atoms alignment creates a positive charge at one end and a negative charge on the opposite end.

Answer 42

Polar Covalent Bonds

Question 43

Attraction/ repulsion stability that forms between two atoms when they share electrons

Answer 43

Covalent Bonds

Question 44

What is Avogadro’s #? (The actual # not definition)

Answer 44

6.0228x10^23