PART I
T. Trimpe 2008
http://sciencespot.net/
Write your homework – leave it out to be
stamped!
Update your Table of Contents for today
Complete your Element Review Square & KEEP IT
SOMEWHERE SAFE, YOU WILL USE IT AGAIN AT
THE END OF CLASS & IT WILL GET TURNED IN!
Date
Session
#
10/12
10/13
7
Activity
Page
#
Bonding Basics Note Guide
8
Ion “Cheater” Chart
9
Homework: Chemical Bonding Worksheet
10
Bonding
is an example of a
chemical change
Bonding occurs when 2 or more
atoms are chemically joined
When 2 or more atoms bond that
is called a molecule
A molecule that contains 2 or
more different elements is called
a compound
VALENCE
ELECTRONS =
the electrons on the outer
(valence) shell of an atom
1
7
2
3
4 5 6
8
The first shell holds
2
electrons.
8
After the 1st shell, each shell needs
electrons to be full and STABLE/HAPPY!
Atoms give away or steal valence electrons
in order to happy and stable with a full
valence shell!
◦ Atoms with less than 4 valence electrons
tend to lose electrons – “Givers”
◦ Atoms with more than 4 valence electrons
tend to gain electrons – “Stealers”
What about an element like carbon?
◦ Carbon has 4 valence electrons, so what
will it do? BOTH!
◦ The fact that carbon
has 4 valence electrons
allows it to bond with
many elements!
Atoms give away or steal valence
electrons in order to be STABLE/HAPPY
with a full valence shell!
REMEMBER: When an atom gains or
loses electrons it becomes a charged
Ion (cation or anion)
____________________
Remember…
ION = an atom with a charge because it
loses or gains one or more electrons.
Positive ion=cation Negative ion=anion
loses electrons
gains electrons
(now has more positive particles
than negative)
(now has more negative particles
than positive)
Here are 2 elements that have a few extra
electrons. What do they want to do?
Here are 2 elements that are missing a few
electrons. What do they want to do?
We have Sodium (Na) who has an extra
electron, and Fluorine (F) who is looking for
an electron SO…
They end up bonding so they can both be
happy!
Fill
in the electron table
using your periodic
table…if you got that move
on to the back!
Element
Chlorine
Potassium
Magnesium
Fluorine
Aluminum
Carbon
Element
Symbol
Atomic
Number
Total # of
Electrons
# of
Valence
Electrons
# of
Electrons
Gained or
Lost
Overall
Charge
(+/-)
Atomic # =
Atomic # =
Atomic Mass =
Atomic Mass =
# of Protons =
# of Protons =
# of Neutrons =
# of Neutrons =
# of Electrons =
# of Electrons =
Cation or Anion =
Ion Symbol =
Group/Family
Name
Alkali
Metals
Group/Family
Number
1
# of Valence
Electrons
1
# of empty
spaces for
electrons
7
Giver or Stealer
of electrons
Giver
Type of ion
formed
Cation
Charge of ion
formed
+1
Group # they
bond with
7
Alkaline
Metals
Boron
Family
Carbon
Family
Nitrogen
Family
Oxygen
Family
Halogens
Noble
Gases
PART 2
T. Trimpe 2008
http://sciencespot.net/
Ionic
Bonds
Covalent
Bonds
TAKE
Atoms will ____________
one or more electrons to
form a bond.
COMPLETE
Each atom is left with a ________________
valence
shell.
METAL
An ionic bond forms between a ___________ion
with a positive charge and a ________________
ion
NONMETAL
with a negative charge.
SHARE one or more electrons with each
Atoms ___________
other to form the bond.
COMPLETE
Each atom is left with a ________________
valence
shell.
NONMETALS
A covalent bond forms between two ________________.
https://www.youtube.com/watch?v=NgD9yH
SJ29I
Bromine
Iodine
Calcium
Chlorine
METAL ATOMS
A metallic bond forms between ________________.
Valence electrons move freely in an
__________________
“ELECTRON SEA” between metal atoms to form a
bond between all the metal atoms in the area.
This gives metals strength, stability, and properties like
conductivity & malleability.
ALLOYS
Metallic bonds create solutions called __________,
which
are a combination of elements that make other metallic
materials like brass, bronze, pewter, steel, and even
white gold!
http://cd1.edb.hkedcity.net/cd/science/che
mistry/resource/animations/metallic_bond/
metallic.html
ON
THE BACK OF YOUR ELEMENT
SQUARE WARM-UP NUMBER 1-10
Make sure your name is on it
somewhere!
1. Which of the following particles are
involved in bonding?
A.
B.
C.
D.
Protons
Neutrons
Electrons
Valence Electrons only
2. How many valence electrons does
Silicon (Si) have?
3.
TRUE OR FALSE:
According to the
Octet Rule, atoms with more than 4
valence electrons are “stealers.”
4. Which type of bond is between a metal
and a nonmetal?
A.
Covalent
B.
Ionic
C.
Metallic
5. ____________ bonds involve taking
electrons to be stable/“happy” or
complete.
A.
Ionic
B.
Covalent
C.
Metallic
6.
A _______________ bond is between
two or more nonmetals and involves
sharing electrons.
A.
Ionic
B.
Covalent
C.
Metallic
7. Ionic or Covalent?
8. Ionic or Covalent?
9. Which type of bonding involves a “sea
of electrons,” that flow freely from one
atom to another?
A.
Ionic
B.
Covalent
C.
Metallic
10. Metallic bonding is useful to form
other metallic materials called…
A.
Metalloids
B.
Alloys
C.
Fools Metals
Bonding Raps
http://www.youtube.com/watch?v=Xaoy94m
x2EU
https://www.youtube.com/watch?v=wWUYHH
o-zB0
0
