chemistry exam

Question 1

what did debroglie discover

Answer 1

wave particle duality

Question 2

what was planks contribution

Answer 2

the concept of a quanta of energy

Question 3

what did schrodinger contribute

Answer 3

the wave equation

Question 4

what did bohr use to discover energy levels

Answer 4

line diagram

Question 5

teh quantum mechanical model of the atom treats the electron like ____

Answer 5

a wave

Question 6

what are the number of neutrons in a c-14 isotope

Answer 6

8

Question 7

what colour of light emitted with the largest electron transitions would be __

Answer 7

violet

Question 8

what did pauli say

Answer 8

said that two electrons in the same orbital must have opposite spins

Question 9

the set of quantum numbers that is possible is
n=1, l=1, m1=-1, m2=-1/2
n=1, l=0, m1=0 m2=-1/2
n=2, l=1, m1=2, m2=1/2

Answer 9

B

Question 10

what did albert einstein discover

Answer 10

the photoelectric effect

Question 11

what elements are paramagnetic

Answer 11

al and pt

Question 12

hunds rule

Answer 12

one electron must occupy each orbital before a second electron occupys an orbital

Question 13

what is the principle quantum number

Answer 13

describes the energy shell

Question 14

what elements use ferromanetism

Answer 14

ni fe and co

Question 15

electronegativity

Answer 15

> .4 non polar covalent <0.4 polar covalent <1.8 ionic bond

Question 16

non metals tend to ____

Answer 16

gain electrons

Question 17

what is the heisenberg uncertainty principle

Answer 17

determined that it is impossible to predict the exact location of an electron

Question 18

a unit of light energy is called ____

Answer 18

a photon

Question 19

the magnetic quantum number describes the

Answer 19

orientation of the orbital in space

Question 20

the total number of orbitals present in n=3

Answer 20

9

Question 21

which device uses electrons at high speed to bombard a target

Answer 21

x rays

Question 22

which technology produces monochromatic light

Answer 22

lazers

Question 23

which plastic can be recycled in sault ste marie

Answer 23

number 1 and 2 lowdensity polyethene

Question 24

whats another name for teflon

Answer 24

polytetraflouroethene

Question 25

what do the two numbers represent after nylon

Answer 25

the first number represents the amino acid adn the sescond number represents the carboxylic acid

Question 26

cross linking happens by adding which molecules

Answer 26

sulfur

Question 27

plasticizer that causes issues with health

Answer 27

pthalate

Question 28

how do you harden natural rubber in tires

Answer 28

vulcanization

Question 29

what is polyproplyene made for

Answer 29

ropes

Question 30

fats and oils are

Answer 30

insoluble in water unsaturated hydrocarbons kink and have a higher meltign pt

Question 31

what are esters made from

Answer 31

the oxidaation of aldehydes

alcohol and carboxylic acid

Question 32

aldehydes vs ketones

Answer 32

ketones are in the middle of molecules and aldehydes are on the end

Question 33

carboxylic acids

Answer 33

very polar very soluble in water soluble in alcohol

Question 34

esters

Answer 34

less polar than carboxylic acids and do not haeve hydrogen bonds they are les soluble and have lower boiling points

Question 35

thiols

Answer 35

have strong odours

Question 36

what smells like bananas

Answer 36

ethsters

Question 37

alkenes

Answer 37

the closer atoms pack together the higher the mp and bp highly reactive

Question 38

alkynes

Answer 38

insoluble in water low bp and mp are less dense than water even more reactive than alkenes

Question 39

aeromatic hydrocarbons

Answer 39

chemically stable liquids at rm temp insoluble in water nonpolar less reactive than alkenes