Name: ___________________________________ Period:___ Date:______
Dekalb Reads Assignment: 4.2B
Ionic And Covalent Bonding
Metallic and Covalent Bond
Read pages118-121 and answer the questions
Use your own textbook. Score 5 points.
Maximum points possible: 35
When can metals conduct electricity?
Define metallic bond.
What happens due to attraction between one atom’s nucleus and a the nucleus of neighboring atom?
What happens due to close packing of the atoms?
Why are metals flexible?
Why do metals conduct electricity so well?
Define covalent bond.
What kind of bonds are there in silicon dioxide?
**What kind of covalent compounds have higher melting point?
What is the melting point of most covalent compounds?
Why the molecules do not conduct electricity?
How many electrons do each chlorine atom has in its outer most energy level before bonding?
Why the chlorine atoms do not transfer electrons?
How can both the chlorine atoms together have a full outer most energy level?
Why the electrons of bonding chlorine atoms are equally attracted to the positive nucleus of each atom?
Define non polar covalent bond.
What does a single line drawn between two Chlorine atoms show?
Can atoms share more than one electron?
How many electrons are shared between the 2 oxygen atoms in O2 molecule?
How many electrons are shared between the 2 Nitrogen atoms in N2 molecule?
Think and define in your own words.
(a): double covalent bond
(b): Triple covalent bond.
What happens when 2 different atoms share electrons.
What forms a polar covalent bond.
Which elements attract the electrons more.
Define poly atomic ion.
Write down the chemical formula of baking soda.
What ions does sodium carbonate contain?
What is the formula for ammonium ion?
What does the ending "-ate" and "-ite" indicate in the name of an ion?