Chapter 5-6

Question 1

was the first to discover some elements had similar properties (early 1800’s) –

Answer 1

Johann Doberiener

Question 2

he also figured if you average mass of 3 elements, is the mass of the middle element -

Answer 2

Johann Doberiener

Question 3

he organized elements in order of increasing mass -

Answer 3

John Newlands

Question 4

he noticed that properties of the elements seem to repeat every 8 elements

Answer 4

John Newlands

Question 5

1-7 elements =

Answer 5

different properties

Question 6

8th element =

Answer 6

property like element 1

Question 7

9th element =

Answer 7

property like element 2

Question 8

repeating patterns ..

Answer 8

octaves

Question 9

he wroter properties of each elements on cards & then arranged them in various ways =

Answer 9

Dmitri Mendeleev

Question 10

he organized the 1st periodic table =

Answer 10

Dmitri Mendeleev

Question 11

he worked under Rutherford

Answer 11

Henry Moseley

Question 12

he used x-rays to assign each element a whole #, called the atomic # =

Answer 12

Henry Moseley

Question 13

he organized elements by atomic #, not mass # =

Answer 13

Henry Moseley

Question 14

how many elements are there?

Answer 14

117 elements

Question 15

elements w/ similar properties
arranged in columns
numbered 1-18, starting at the left

Answer 15

group

Question 16

elements in a row

numbered by energy levels, starting at the top

Answer 16

period

Question 17

as the number ___________, so does the number of ___________ in the period.

Answer 17

increase

elements

Question 18

why was the f-block taken out and put in the bottom =

Answer 18

because it was to hard

Question 19

they’re silver-gray, except copper & gold

Answer 19

metals

Question 20

they’re also called semimetals =

Answer 20

metalloids

Question 21

they have high melting points -

Answer 21

metals

Question 22

they don’t reflect light =

Answer 22

non-metals

Question 23

they DO reflect light when polished -

Answer 23

metals

Question 24

they are poor conductors of heat and electricity -

Answer 24

non-metals

Question 25

they can be bent / hammered flat -

Answer 25

metals

Question 26

they are good conducters of heat and electricity -

Answer 26

metals

Question 27

they are properties of metals and nonmetals

Answer 27

metalloids

Question 28

"silicon valley" =

Answer 28

metalloids

Question 29

materials that engineers work w/

Answer 29

metalloids

Question 30

brittle, low melting points -

Answer 30

non-metals

Question 31

they are mostly solid or gas at room temperature, except Br = liquid

Answer 31

non-metals

Question 32

they are the electrons in the highest energy level of an atom =

Answer 32

valence elevtrons

Question 33

they are the only electrons that can bond w/ another element to make compounds -

Answer 33

valence electrons

Question 34

to find the # of valence electrons, always used the _________ ________ of the group number.

Answer 34

ones place

Question 35

the # of valence electrons varies for what blocks?

Answer 35

the d & f blocks

Question 36

its when elements are arranged in order of increasing atomic number, their physcial and chemical properties show a periodic (repeating) pattern -

Answer 36

periodic law

Question 37

systematic means ...

Answer 37

order

Question 38

systematic and predictable variation in a physcial or chemical property of each element as you move throught the periodic table =

Answer 38

periodic trend

Question 39

all atoms on the same energy level -

Answer 39

atomic radius

Question 40

left to right (electrons get pulled in) -

Answer 40

atomic radius

Question 41

it ____________ from left to right. -

Answer 41

decreases

Question 42

why does it decrease from left to right -

Answer 42

as you move to the right, each atom adds a proton & electron

Question 43

they pull on all electrons -

Answer 43

protons

Question 44

the more _______, the more the electrons get _______ on.

Answer 44

protons | pulled

Question 45

the more the protons _____, the closer the electrons are too the _________

Answer 45

pull | necleus

Question 46

the elctron w/ a lot of energy & is close=

Answer 46

harder to take away

Question 47

electrons w/ less energy & NOT close =

Answer 47

easy to take away

Question 48

the elctron w/ a lot of energy & is close electrons w/ less energy & NOT close ^^ what is this called =

Answer 48

Ionization Energy

Question 49

small radius = close electrons = harder to take away =

Answer 49

higer energy

Question 50

large radius = far electrons = easy to take away =

Answer 50

low energy

Question 51

how much an atom wants to take an electron away from another atom =

Answer 51

electronegativitiy

Question 52

low electronegativity =

Answer 52

DOESNT want to take electron away

Question 53

high electronegativity =

Answer 53

DOES want to take electron away

Question 54

high ionization energy = high elctronegativity which =

Answer 54

it takes

Question 55

low ionization energy = low electronegativity which =

Answer 55

it gives

Question 56

bigger atoms - electrons farther from nucleus =

Answer 56

less energy

Question 57

all elements in a single group share .....

Answer 57

same properties

Question 58

the properties of metalloids are ...

Answer 58

they are halfway between metals and non-metals

Question 59

the elements are arranged in order of increasing atomi c #; it shows a repeating pattern -

Answer 59

periodic law

Question 60

how much an atom wants to take away electrons from another -

Answer 60

electronegativity

Question 61

amount of energy it takes to remove an electron from an atom =

Answer 61

ionization energy

Question 62

when moving left to right the ......

Answer 62

atomic radius decreases

Question 63

what are the elements on the bottom of the periodic table called -

Answer 63

rare earth metals

Question 64

distance between the nucleus of an atom to the outtermost part

Answer 64

atomic radius

Question 65

whats another name for group 2 -

Answer 65

alicine earth metals

Question 66

groups 18 also knows as ...

Answer 66

nobel gas

Question 67

group 1 also known as ....

Answer 67

alkaline metals

Question 68

what is the d block also known as ...

Answer 68

transition metals

Question 69

group 1 also known as ...

Answer 69

alkali metals

Question 70

group 17 also known as ...

Answer 70

halogens

Question 71

where are metalloids?

Answer 71

the ziggy line on periodic table

Question 72

where are metals?

Answer 72

all the elements to the LEFT of the metalloids/ziggy line

Question 73

where are non-metals =

Answer 73

all the elementts to the left of the ziggy line/metalloids