chemical bonding Flashcards
which group of elemets is chemically unreactive
noble gasses
Ionic bonds
____ will lose electrons forming a positive ion called a _____
_____ will gain electrons forming a negativie ion called _____
Metals, cations
Nonmetals, anions
The attraction between cations and anions is called an ____ bond
ionic
A regular repeating shape called a______
Crystal lattice
Melting points on Ionic Bonds are
generally high
Boiling points on Ionic bonds are
generally high
ionic solids are ____but not ____
Brittle, malleable
when Ionic bonds are dissolved they can conduct
electricity
all metal atoms have atleast _____ _____ ____
1 valence electron
in metallic bonds when bonding they do not lose
valence electrons
the valence level of metal atoms ___ in the atoms
overlay
the crowded condition of metal atoms can be reffered to as the
electron sea
the electrons in a metallic bond are
delocalized
metalliods changing shape with force is called
malleability
metals can be drawn out into thin wires called
ductility
the surface of a metal can be made very smooth so metals are
luster
the moving electrons in metals can form
electricity
metals with s and d electrons are ___ then metals with just s electrons
harder
nonmetals can attain a noble gas configuration by _____ valence electrons with other nonmetals
sharing
when valence electron pairs are shared between two atoms, a _____ bond is formed
covalent
melting points on covalent bonds are
lower
boiling points on covalent bonds are
lower
Covalent Bonds usually exist at
liquids or gasses at room temp
covalentbonds may or may not _____ in water
dissolve
covalent bonds do not conduct
electricity
Metallic
M + M
Sea of electrons(delocalization)
Ionic
m + nm
transfer of electrons
covalent
nm + nm
sharing of electrons
Contains delocalized valence electons
metallic
forms between metallic and nonmetallic elements
Ionic
demsonstates a high boiling point in addition to electrical condictivity when disolved in water
Ionic
substance dissolves in water and has a low melting point
Covalent
substnaves exhibits malleability in the solid phase
Metallic
conducts electricity in the solid phase
metallic
dissolves in water and has a high melting point
ionic
sharing of valence electrons in a localized region between two nuclei
covalent
Nonmetals tend to form cations
False
The alkaline earth elements have two valence electrons
True
a halogen reactng with potassium will form a covalent bond
False
the force that holds atoms together is a chemical bond
True
Elements may lose gain or share electrons in forming chemical bonds
True