http://facstaff.gpc.edu/~pgore/PhysicalScience/at
om-with-electrons.gif
http://en.wikipedia.org/wiki/Chemical_reaction
http://www.liquidsculpture.com/images/water/water-drop-a.jpg
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
Reactants: Also known as substrates, are the starting materials for a chemical reaction.
Product: The result of the reaction between the reactants.
http://www.marietta.edu/~spilatrs/biol103/photolab/reaction.html
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
http://en.wikipedia.org/wiki/Law_of_Conservation_of_Mass
 In every chemical reaction there is energy
 This energy is needed to either break bonds in the
reaction or create them
 As the bonds break energy is released, but when
bonds are made energy is absorbed
 Chemical reactions are classified as exothermic or
endothermic
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
Exothermic reactions are reactions in which
energy is released. The energy that is released
is called chemical potential energy. This energy
is the energy stored in the bonds between
atoms. It is called potential energy because it
has the potential to be converted to other
forms of energy. Some of the time this energy
is turned into heat which causes the product to
feel hot. This would be called combustion
(a.k.a. burning) and is always a exothermic
reaction.
http://en.wikipedia.org/wiki/Potential_energy
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
Endothermic reactions are reactions in which
energy is absorbed. This energy is needed for the
reaction to occur. Mostly this energy is either
heat of electrical energy. When you add electrical
energy to metal oxides, it can separate them into
just metal and oxygen. If you add electrical
energy to sodium chloride it may cause the table
salt to break into sodium and chlorine.
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
http://www.geocities.com/newideasfromtelewise/endo_exothermic.gif
1. The formation of a precipitate, a precipitate is formed in a
chemical reaction and is a solid that is different from the
reactants.
2. A change in the color of the reactants
3. A formation of gases, usually in the form of bubbles or foam
4. A change in temperature
1.
2.
3.
4.
http://www.harpercollege.edu/tm-ps/chm/100/dgodambe/thedisk/chemrxn/signs.htm
Exothermic Reaction:
In the first picture a heated metal rod in placed into a
mixture of iron powder and sulfur (iron sulfide). This
heated metal rod starts a exothermic reaction. Then as
you can see in the second picture the product of the
reaction is that the iron sulfite is fused to the metal rod.
http://jchemed.chem.wisc.edu/jcesoft/CCA/CCA3/MAIN/FEZNSUL/PAGE1.HTM
Barium hydroxide and an ammonium salt. When the two
solids are mixed and then combined with water. When
mixed, the temperature of the solution drops below the
freezing point of water.
http://genchem.chem.wisc.edu/demonstrations/Gen_Chem_Pages/06thermopage/endothermic_reactions_of_b.htm
Activation Energy is the least amount of energy
needed for a chemical reaction to start. Some
elements and compounds react to each other by just
being near each other. This makes their activation
energy zero. Most other elements and compounds
will only react to each other if a certain amount of
energy is added to both of them. For example: when
you slide a match on the side of a matchbox, the
friction provides activation energy (in the heat form)
for the match to light. Activation energy is measured
in the number of joules per mole of reactants.
http://www.thefreedictionary.com/activation+energy
http://upload.wikimedia.org/wikipedia/common
s/thumb/c/c1/Streichholz.jpg/250pxStreichholz.jpg
A synthesis reaction occurs when two or more simple substances
(reactants) combine to form a bigger, more complex substance
(product). In a chemical formula: if two or more reactants produce
one product, it is a synthesis reaction.
In this example, hydrogen and oxygen bond together in a synthesis reaction to
produce water. This reaction is easy to perform. Just mix hydrogen and oxygen
and the reaction does the rest.
General Form:
A + B ---> AB
http://misterguch.brinkster.net/6typesofche
micalrxn.html
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
The Hindenburg balloon blowing up after the
HYDROGEN gas inside was ignited
http://web1.caryacademy.org/chemistry/rushin/StudentProjects/
ElementWebSites/hydrogen/Hindenberg.jpg
Liquid OXYGEN in a bowl
http://periodictable.com/Samples/008.10/s13.JPG
WATER droplet
http://www.idswater.com/Common/header/Img-water.jpg
A decomposition reaction occurs when a complex substance
containing more than one simple substance breaks down into its
original elements. Basically in a chemical formula a reactant makes
two or more products as in the example below. Yes, synthesis and
decomposition reactions are exact opposites.
In this example, water breaks down into hydrogen and oxygen as separate
substances. This reaction is not as easy as bonding hydrogen and oxygen. It
takes a more complex procedure.
General Form
AB ---> A + B
http://misterguch.brinkster.net/6typesofche
micalrxn.html
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
The reaction of calcium metal
and water. The bubbles you see is
A glass of WATER
http://www.backactive.ca/Portals/backactive/wat
er_glass.jpg
a HYDROGEN gas
http://www.uncp.edu/home/mcclurem/ptable/ca_2.jpg
A tank of compressed
OXYGEN gas
http://wwwpersonal.umich.edu/~lpt/oxlabe
l_files/oxlabel.gif
Combustion (also know as burning) is a sequence of exothermic reactions . These
reactions include a fuel and an oxidant. When this reaction takes place, heat is
produced. This heat is shown as just a rise in temperature or by a rise in temperature
and the production of light. The light is either shown in the form of flames (fire) or a
glow.
http://en.wikipedia.org/wiki/Combustion
C10H8 + 12 O2 ---> 10 CO2 + 4 H2O
http://www1.istockphoto.com/file_thumbview_
approve/2986938/2/istockphoto_2986938mountain-of-fire.jpg
A combustion reaction is when oxygen combines with another compound to form
water and carbon dioxide. This means the chemical formula must have a CO2 and a
H2O in the product as seen above in the formula for the burning of naphthalene.
http://misterguch.brinkster.net/6typesofchemicalrxn.html
Naphthalene
http://www.fishingmegastore.com/acata
log/Naphthalene-Crystals.jpg
Naphthalene is know as the traditional, primary ingredient in moth balls.
http://en.wikipedia.org/wiki/Naphthalene
A single replacement reaction also known as a single displacement
reaction occurs when one uncombined element and one compound
are the reactants in a chemical reaction. In this type of reaction the
one single element takes the place of one of the elements in the
compound.
Cl
H
Zn
Cl
In this example zinc and a combination of hydrogen and
chlorine , called hydrochloric acid, are the reactants. But, as
you can see, in the product, zinc took the place of hydrogen
in the compound and now hydrogen is the single element.
So, in a chemical formula if a lone element takes the place
of an element in a compound you know it is a single
replacement reaction.
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
General Form
A + BC ---> AC + B
http://misterguch.brinkster.net/6typesofchemicalrxn.html
R
e
a
c
t
i
o
n
Cl
Zn
Cl
H
H
H
A double replacement reaction occurs when there are two
compounds in the reactants and the product. The reaction takes
place when part of one of the compounds is switched with a part of
the other compound which gives you the product.
Ag
O
Na
Cl
N
O
O
Ag
Cl
O
O
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
Na
O
In this example silver, nitrogen, and oxygen (a.k.a. silver nitrate) is
reacting with sodium and chlorine (a.k.a. sodium chloride). When they
react two new compounds are formed, silver and chlorine (a.k.a. silver
chloride) and sodium, nitrogen, and oxygen (a.k.a. sodium nitrate). In a
chemical formula if there is two compounds in both eh reactants and
product and the parts of the compounds are switched, the reaction is a
double replacement reaction.
N
General Form
AB + CD ---> AD + CB
http://misterguch.brinkster.net/6typesofchemicalrxn.html
http://misterguch.brinkster.net/6typesofchemicalrxn.html
“ Chemical Reaction” http://en.wikipedia.org/wiki/Chemical_reaction
“ Photosynthesis Investigation Study Guide”
http://www.marietta.edu/~spilatrs/biol103/photolab/reaction.html
“Law of Conservation of Mass”
http://en.wikipedia.org/wiki/Law_of_Conservation_of_Mass
“ To React or Not to React? That is the Question!”
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
“ Potential Energy”
http://en.wikipedia.org/wiki/Potential_energy
“ Signs of a Reaction” http://www.harpercollege.edu/tmps/chm/100/dgodambe/thedisk/chemrxn/signs.htm
“Reactions of Iron with Sulfur, Zinc with Sulfur”
http://jchemed.chem.wisc.edu/jcesoft/CCA/CCA3/MAIN/FEZNSUL/PAGE1.HTM
“Endothermic Reactions of Barium Hydroxide and Ammonium Salts”
http://genchem.chem.wisc.edu/demonstrations/Gen_Chem_Pages/06thermopage/endothermic_reactions_of_b.htm
“ Activation Energy” http://www.thefreedictionary.com/activation+energy
“ Combustion” http://en.wikipedia.org/wiki/Combustion
“The Six Types of Chemical Reactions” http://misterguch.brinkster.net/6typesofchemicalrxn.html
“Atom with Electrons” http://facstaff.gpc.edu/~pgore/PhysicalScience/atom-with-electrons.gif
“Water Drop” http://www.liquidsculpture.com/images/water/water-drop-a.jpg
“Chemical Formula” http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
“Endothermic and Exothermic Reaction Examples” http://www.geocities.com/newideasfromtelewise/endo_exothermic.gif
“Chemical Reaction Signs” http://www.harpercollege.edu/tm-ps/chm/100/dgodambe/thedisk/chemrxn/signs.htm
 Exothermic Reaction” http://jchemed.chem.wisc.edu/jcesoft/CCA/CCA3/MAIN/FEZNSUL/PAGE1.HTM
“Endothermic Reaction”
http://genchem.chem.wisc.edu/demonstrations/Gen_Chem_Pages/06thermopage/endothermic_reactions_of_b.htm
“ Fire” http://upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Streichholz.jpg/250px-Streichholz.jpg
“ Hindenburg” http://web1.caryacademy.org/chemistry/rushin/StudentProjects/ElementWebSites/hydrogen/Hindenberg.jpg
“Liquid Oxygen” http://periodictable.com/Samples/008.10/s13.JPG
“Water” http://www.idswater.com/Common/header/Img-water.jpg
“Glass of Water” http://www.backactive.ca/Portals/backactive/water_glass.jpg
“Hydrogen” http://www.uncp.edu/home/mcclurem/ptable/ca_2.jpg
“ Compressed Oxygen Gas” http://www-personal.umich.edu/~lpt/oxlabel_files/oxlabel.gif
“Naphthalene” http://www.fishingmegastore.com/acatalog/Naphthalene-Crystals.jpg
“ Mountain of Fire” http://www1.istockphoto.com/file_thumbview_approve/2986938/2/istockphoto_2986938-mountain-of-fire.jpg