Chapter 10 - The Periodic Table

Question 1

what is the periodic table

Answer 1

the periodic table is a char of the elements arranged in rows and columns according to physical and chemical properties

Question 2

who was Dimitri Mendeleev and what did he do?

Answer 2

he studied the physical traits and reactivity of the known elements (at the time) and sorted them by atomic mass

Question 3

what were some of the repating patterns that Mendeleev noticed when creating the periodic table

Answer 3

some reapting patterns included melting point, boiling point, and reactivity

Question 4

what did these repeating patterns in the periodic table allow Mendeleev to do

Answer 4

allowed him to (accurately) predict “missing” elements that had still to be discovered, and their properties

Question 5

what did henry mosely do

Answer 5

he rearranged the periodic table my atomic number instead if atomic mass, resulted in the columns in the table having similar properties

Question 6

on the periodic table, what are “groups” or “family”

Answer 6

“groups” or “family” are the columns in the periodic table

Question 7

in the periodic table, what happens as you go down the columns

Answer 7

atomic number increases

Question 8

what do the elements of the periodic table show a pattern of

Answer 8

elements are organized into a pattern for physical and chemical properties

Question 9

what are some things elements are organized into groups for

Answer 9

density, melting point, and boiling point

Question 10

what are periods

Answer 10

rows on the periodic table (atomic number increases as you go from left to right on chart)

Question 11

what are element squares

Answer 11

squares of the periodic table that show all important information about the element

Question 12

study elemnt squares

Answer 12

GO bakA

Question 13

what are 75% of metals made of

Answer 13

metal (mostly on the left and middle side of table)

Question 14

most elements are solid at room temp

Answer 14

yup

Question 15

where on the periodic table are nonmetals

Answer 15

on the far right

Question 16

what are metalloids

Answer 16

are between the 2 groups and have some properties of metals and nonmetals

Question 17

are elements still being created?

Answer 17

yes elements that are not naturally occurring in labs

Question 18

how does the periodic table help scientists

Answer 18

helps the scientists to predict the properties of the new elements

Question 19

how many named elements does the current periodic table have

Answer 19

118

Question 20

what is luster

Answer 20

the ability of a substance to reflect light

Question 21

what generally has higher luster

Answer 21

metal generally has higher luster

Question 22

what is conductivity

Answer 22

the ability of a substance to transfer heat or electricity

Question 23

do metals have good conductivity

Answer 23

metals tend to have good conductivity

Question 24

what is ductility

Answer 24

the ability to be pulled into a wire

Question 25

are metals ductile

Answer 25

metals tend to be ductile

Question 26

what is malleability

Answer 26

the ability to be hammered or rolled into sheets

Question 27

are metals malleable

Answer 27

metals tend to be mallable

Question 28

what are some properties that tend to be greater in metals than other elements

Answer 28

density, strength, melting point, and boiling point

Question 29

what is the only metal that isn't a solid at room temp

Answer 29

mercury

Question 30

what happens to reactivity of metals as you move from left to right on the columns

Answer 30

reactivity of the metals tend to decrease

Question 31

where can alkali metals be found on the periodic table

Answer 31

first column of the periodic table

Question 32

where are the most reactive metals in a column

Answer 32

most reactive metals increase as you go down the column

Question 33

are alkilai meteals found in nature

Answer 33

no

Question 34

why do pure alkali metals have to be carefully stored

Answer 34

because they will react with oxogen and water (violently)

Question 35

how many electrons do alkali metals have in their outer shell

Answer 35

only 1 in the outer shell

Question 36

what is the color and consistancy of alkali metals like

Answer 36

silverly-colered witch are soft and can be easily cut

Question 37

whats an example of metals that are soft with low melting and boiling points and low densities

Answer 37

sodium and potassium

Question 38

what does sodium and potassium tend to combine with to form salts

Answer 38

tends to combine with group 17

Question 40

what is the first group of metals in the periodic table

Answer 40

alkali metals

Question 41

what is the second group of metals on the periodic table

Answer 41

Alkali earth metals

Question 42

where are alkali earth metals located on the periodic table

Answer 42

second column

Question 43

how many electrons do alkali earth metals have

Answer 43

2 electrons to lose or share

Question 44

how reactive are group 2 alkali metals

Answer 44

less reactive than group one, but still react easily and quickly

Question 45

do pure alkaline earth metaks occur naturally

Answer 45

no

Question 46

whata are all pure alkaline earth metals like in color and density

Answer 46

all are soft and silvery with low density but higher density than those in column one.

Question 47

what group does calcium fall into

Answer 47

into group 2

Question 48

what is calcium needed for

Answer 48

needed for strong bones and teeth.

Question 49

what are groups 3-12 called

Answer 49

transition metals

Question 50

what are some example of metals in groups 3-12

Answer 50

copper, Iron, silver, and gold

Question 51

transition metals are hard, shiny, and ____

Answer 51

good conductors

Question 52

True or False? Transition metals are hard, shiny, and good conductors

Answer 52

true

Question 53

transition metals are less ____ than groups 1 and 2

Answer 53

reactive

Question 54

where do transition metals occur

Answer 54

can occur as a pure element in nature

Question 55

what are transition metals most commonly used for

Answer 55

building materials, coins, jewelry, appliances, pigments, is the natural coloring in gemstones

Question 56

what is the color like of transition metals

Answer 56

many are colorful

Question 57

what are lathanides

Answer 57

soft, malleable, shiny, conductive transition metals

Question 58

where are lanthanides usually found

Answer 58

usually found mixed together in nature

Question 59

what are lanthanides usually used for

Answer 59

many are used to make strong magnets

Question 60

What are Actinides

Answer 60

part of transition metals,

Question 61

what is actinides used for

Answer 61

used to prouduce fuels and energy in nuclear plants

Question 62

what are "poor metals"

Answer 62

post-transition (or common) metals