Science Ch. 19

Front 1

where are metals found on the periodic table?

Back 1

to the left of the stair step line

Front 2

name some properties of metals

Back 2

good conductors of heat and electricity. all but one are solid at room temperature.

Front 3

what metal is not solid?

Back 3

mercury

Front 4

what is it called if something reflects light?

Back 4

luster

Front 5

what does malleable mean?

Back 5

it can be hammered or rolled into sheets.

Front 6

what does ductile mean?

Back 6

they can be drawn into wires

Front 7

both metals and nonmetals become more chemically stable when they form ions. they take on the ____ structure of the nearest ____

Back 7

electron. noble gas.

Front 8

in ____ positively charged metallic ions are surrounded by a cloud of electrons.

Back 8

metallic bonding

Front 9

why dont metals break when hammered or when put into a string?

Back 9

because the ions are in layers slide past each other without losing their attraction to the electron cloud

Front 10

why are metals good conductors of electricity?

Back 10

the outer-level electrons are weekly held

Front 11

what type of metals are the elements in group 1?

Back 11

the alkali metals

Front 12

what type of element is one in which the nucleus breaks down ad gives off particles of energy?

Back 12

radioactive

Front 13

what metals make up group 2 of the periodic table?

Back 13

alkaline earth metals

Front 14

an electron is given up when an alkali metal combines with what? and alkali earth metal?

Back 14

atom. non-metal

Front 15

what types of elements are in groups 3 through 12? metaloid non metal or metal

Back 15

transition.metal

Front 16

whats known as the iron triad?

Back 16

iron cobalt and nickel groups 8 9 10

Front 17

what are the inner transition metals?

Back 17

the troph ( 2 cut off)

Front 18

Which of the following is the most reactive of all metals?

Back 18

alkali

Front 19

How do transition elements differ from elements in Groups 1 and 2?

Back 19

they are more stable

Front 20

what is the most abundant element in Earth's crust?

Back 20

aluminum

Front 21

Which of the following is true of all the elements in the actinide series?

Back 21

they are radioactive

Front 22

elements that are gases or brittle solids at room temperature

Back 22

nonmetal

Front 23

what are the only group of elements that are non metals?

Back 23

noble gases (group 18)

Front 24

what happens when non metals gain an electron from metals?

Back 24

they become negative ions in ionic compounds

Front 25

covalent=

Back 25

non metals

Front 26

ionic=

Back 26

metals and non metals

Front 27

metallic bond=

Back 27

mentals and metals bond

Front 28

alkali metals are the ____ reactive metals

Back 28

most

Front 29

halogens are ____ reactive non metals (1 metal)

Back 29

not

Front 30

noble gases are ____ reactive non metals

Back 30

not the most reactive

Front 31

what is the only metal on the stair step line?

Back 31

aluminum

Front 32

consists of 2atoms of the same element in a covalent bond

Back 32

diatomic molecule

Front 33

if a halogen gains an electron from a metal, an ionic compound called ____ forms

Back 33

salt

Front 34

the process of a solid changing directly to a vapor without forming a liquid is called___

Back 34

sublimation

Front 35

______ exist as isolated atoms

Back 35

the noble gases

Front 36

which group is known as the halogens?

Back 36

17

Front 37

___ can form ionic and covalent bonds with other elements and have metallic and non metallic properties

Back 37

metalloid

Front 38

different forms of the same elemet. different molecular structures

Back 38

allotropes

Front 39

elements that conduct an eletric current under certain conditions

Back 39

semiconductors

Front 40

elements having more than 92 protons the atomic number of uraniam are called ______

Back 40

transuranium elements