Section 6.1-6.4

Lakukan tugas rumah & ujian kamu dengan baik sekarang menggunakan Quizwiz!

By forming _____ with eachother most atoms______ there potential energy and become more stable This is a ___ change

bonds; reduce; chemical

metal is a

cation (give up electrons)

The fact that metals are malleable and ionic crystals are brittle is best explained in terms of their

chemical bonds

nonmetal& nonmetal

covalent bond either polar or non polar

10

deca

electrons that are free to move in metals

delocalized electrons

How is the strength of metallic bonds measured?

determined by the enthalpy vaporization

2

di

When a metal is drawn into a wire, the metallic bonds

do not break

The property of _____________, which is the measure of the atoms ability to attract electrons, can be used to predict the degree to which the bonding between atoms of two elements is ionic or covalent.

electronegativity

the measure of an atom's ability to attract electrons

electronegativity

All chemical changes involve what?

energy

non polar

even

non-polar

evenly shared bonds between 2 atoms

In metallic bonding valence electrons move ____ in a _____ of metal atoms. The network of metal atoms is called _______.

freely, network, crystal lattice

the greater the electronegativity the ______ the ionic bond

greater

7

hepta

6

hexa

metal&nonmetal

ionic

> 1.7

ionic bond

What happens between bonds as you move left to right?

left to right bonds increase

Mobile electrons in the metallic bond are responsible for

luster, thermal conductivity, electrical conductivity

chemical bonding that results from the attraction between metal atoms and the sea of electrons

metallic bonding

3 types of bonds are

metallic, ionic, and covalent

How does the behavior of electron in metals contribute to metals ability to conduct electricity and heat?

mobile

1

mono

Chemical bond

mutual electrical attraction between the nuclei and valence electrons of different atoms that bind the atoms together

0, .3

non-polar covalent

9

nona

8

octa

In a metal, the vacant orbitals in the atoms' outer energy levels _____, which allows the outer electrons of the atoms to roam ______ throughout the entire metal.

overlap; freely

5

penta

>.3,<1.7

polar covalent bond

First element does not need a ____ while second element always needs it

prefix

Rarely is bonding between atoms_____ ionic or purely covalent.

purely

valence electrons around metal atoms which are packed around of a crystal lattice

sea of electrons

ionic has ______ electron clouds

separate

ionic

separate electron clouds

In valence electrons, the valence electrons are considered to be

shared by all surrounding atoms

Covalent bonding

sharing electrons between 2 or more atoms

Why don't the noble gases form chemical bonds?

stable octet (or 2 if helium)

4

tetra

malleability

the ability of a substance to be hammered or beaten into thin sheets

Relationship between the enthalpy of vaporization of a metal and the strength of the bonds that hold the metal together?

the greater the enthalpy if vaporization the greater the metallic bond direct relationship

conductivity electrical

ability to conduct electricity

conductivity thermal

ability to conduct heat

As light strikes the surface of a metal, the electrons in the electron sea

absorb amd re emit the light

nonmetals

anion (get electrons)

ductility

Ability to be drawn or pulled.

Why are atoms lacking eight electrons in the outermost s and p orbitals said to be more reactive?

Atoms that don't have a stable octet or more reactive

What 2 electrons could have less than 8 electrons to be a stable octet

Be and He

properties of covalent compounds

Covalent compounds generally have much lower melting and boiling points than ionic compounds. soft not usually hard flammable

In general, the strength of the metallic bond ________ moving from left to right on any row of the periodic table

Increases

What 2 electrons could have more than 8 valence electrons

S and P

luster

Shiny appearance; absorbed a wide range of light frequencies many separated by small energy differences

Ionic bonding

bonds that result from electrical attractions between cations and anions; 1 atom losses electrons 1 atom gains electrons

Instead, it usually falls somewhere between the two extremes. Why?

The extent of ionic or covalent bonding between two atoms can be estimated by calculating the difference in each elements' electronegativity.

electrical conductivity thermal conductivity malleability ductility shiny appearance (luster - absorb a wide range of light frequencies )

The unique characteristics of metallic bonding

3

tri

polar

uneven

polar has ____ bonds

uneven


Set pelajaran terkait

APES test - Primary Productivity and Energy Flow

View Set

Chapter 11 Cardiovascular System

View Set

PATRIOT SYSTEM ROLES, CAPABILITIES, & LIMITATIONS

View Set