Histroy Of Chem

Question 1

Robert Boyle

Answer 1

boyles law

Question 2

boyles law

Answer 2

the pressure and volume of a gass have an inverse relationship when temp. is held constant

Question 3

Joseph Priestley

Answer 3

▪ turned mercury oxide (HgO) into oxygen and another product

▪discovered oxygen and carbon monoxide

Question 4

Antoine Lavoisier

Answer 4

▪combustion reaction

▪law of mass conservation

Question 5

law of mass conservation

Answer 5

mass is neither created nor destroyed in chemical reactions

Question 6

joseph proust

Answer 6

▪lae of definite proportions

Question 7

law of definite proportions

Answer 7

different samole of pure chemical conpounds always contain the samd proportion of elements by mass

Question 8

John Dalton

Answer 8

▪law of multiple proportions

▪daltons atomic theory

Question 9

law of multiple proportions

Answer 9

▪elements can comvine in different proportions

▪ex: NO NO2

Question 10

daltons atomic theory

Answer 10

1. elememts are made if atoms
2. each element is characterized by the mass if its atoms
3. chemical combination of elements to make conpunds occurs when stoms bond together
4. chemical reactions only rearrange how atoms are combined

Question 11

thomas young

Answer 11

▪double slit expirement

▪electons behave as both a particle and a wave

Question 12

J. J. Thomson

Answer 12

▪cathode ray experiment
▪proved electrons were negitively charged
▪charge to mass ratio

Question 13

Robert A. Millikan

Answer 13

▪oil drop experiment
▪determined charge of a single electron
▪threw out data

Question 14

Ernest Rutherford

Answer 14

▪gold foil experiment
▪nucleus is composed of protons
▪nucleus is very small compared to atom
▪atoms mostly empty space

Question 15

James Chadwick

Answer 15

▪discovered neutron existence and mass

▪newtons second law

Question 16

wavelength

Answer 16

distence and peaks or troughs of a wave

Question 17

frequency

Answer 17

of complete waves (occilations) that pass per unit of time

Question 18

amplitude

Answer 18

vertical diatence between the middle if a wave and the top of its peak

Question 19

list categories of light from shortest wavelength to longest

Answer 19

▪gamma 
▪x-ray
▪uv
▪visible
▪infared
▪microwave
▪radio frequency

Question 20

Wilhelm Wien

Answer 20

▪Wiens law

Question 21

wiens law

Answer 21

wavelength and color can be correlated with temp.

Question 22

Lord Baron Raleigh and James Jeans

Answer 22

▪ultaviolet catastrophe

▪black body radiation

Question 23

black body radiation

Answer 23

electromagnetic radiation emitted from a heated object

Question 24

max planck

Answer 24

▪energy is released in bundles which is an integer multiple of hv
▪plancks constant

Question 25

plancks constant links

Answer 25

the amount of light a photon carries eith the frequency of its wave

Question 26

Einstein

Answer 26

▪ light behaves like a stream of particles ▪ photoelectric effect ▪binding energy for electrons

Question 27

Louis de broglie

Answer 27

▪coined term photon | ▪de broglies equation (mass associated w/ a proton)

Question 28

joseph von fraunhofer

Answer 28

▪saw black lines in electromagnetic spectrum | ▪discovered helium

Question 29

Johann balmer

Answer 29

▪ rydberg equation (gives wavelength of photon emmitted)

Question 30

neils bohr

Answer 30

▪electron can jump between orbits ▪bohrs equation. (orbital energies) ▪

Question 31

ground state

Answer 31

n=1

Question 32

ionization energy

Answer 32

the minimum energy required to remove an electron from the nth state of an atom

Question 33

erwin schrodinger

Answer 33

▪quantum mechanical model ▪wave function ▪equation for the probability of finding an electron in a small space

Question 34

Ψ^2

Answer 34

probability of finding an atom in a small space

Question 35

Werner heisenberg

Answer 35

▪Heisenberg equation (uncertainty in position or speed) | ▪uncertainty principle

Question 36

photoelectric effect equation

Answer 36

Ephoton = Ebinding + kinetic energy electron