A Clock Reaction
Two solutions (A and B) are mixed by pouring from one
beaker into the other. After many seconds, the mixed
solution turns dark blue, the color of the starch-iodine
complex. Changing the concentration...A Chemical Engineer’s Recipe
for Chocolate Chip Cookies
Household cooking involves chemistry. Here is a cooking
experiment in which the product is edible...
An Absorbency Experiment
Try this experiment see how a small amount of absorbent
material can take up many times its own mass in water...
CELLULOSE MOLECULES: LEFT OR
RIGHT-HANDED?
Most objects that occur naturally are not identical with
their mirror images. This characteristic is called
"chirality" or "handedness." The two
forms are often designated...
Detection of Acids and Bases with
Red Cabbage Juice
Red cabbage juice is an example of an acid-base
indicator. In chemistry, an indicator is a tool used to
indicate the presence of a specific chemical or a
specific type of chemicals...
Electrolysis of a Water To electrolyze water.
Electrolysis is a process by which a chemical reaction is
carried out by means of the passage of an electric...
Electrolysis of a Water Solution
A water solution is electrolysed using a 9V battery.
Electrode phenomena can be observed. The kinetic of the
reactions can be changed. Such electrolysis give rise to
many industrial applications...
Electrolysis of KI
To electrolyze a potassium iodide solution. Electrolysis
is a process by which a chemical reaction is carried out
by means of the passage)of an electric current. As the
reaction proceeds iodide is oxidized at the anode...
Fluorescence Emission from Tonic
Water
To observe the fluorescence of quinine in tonic water.
This experiment demonstrates the important and
fascinating phenomenon of fluorescence, the prompt
emission of longer wavelength light when a molecule...
Growing Crystals
To grow crystals from a supersaturated solution. A solid
that dissolves in a liquid (solvent) is called a solute.
Solute can be added to the solvent until no more will
dissolve...
Make Your Own pH-Indicator
To make a phenolphthalein indicator and test the acidity
or basicity of household products. Phenolphthalein is a
large organic...
Making Sponge Toffee
Household cooking involves chemistry. Here's a chemistry
experiment in which the product is edible. What is the
purpose of...
Natural Product Chemistry:
Extracting Pigments
To extract organic pigments from a variety of vegetables.
Organic pigments are large and often complex organic
molecules responsible for the different...
Paper Chromatography
This experiment shows how ink can be separated into its
component dyes by chromatography. This is an illustration
of an important technique used in all chemical
sciences...
Paper Chromatography (2)
To separate the different colours that are in coloured
pens. Chromatography is a common chemical method for
separating substances...
Radial Paper Chromatography
The purpose of this experiment is to separate a mixture
of dyes in felt pen ink...
Removing Iodine from Iodized Salt
To remove potassium iodide from iodized salt. Iodine is a
halogen. At room temperature it is a bluish-black solid
with a metallic luster and is classified as a
semiconductor of electricity. Iodine is needed by the
thyroid...
Removing Iron from Cereal
To remove metallic iron from iron fortified cereal. Iron
is the most abundant metallic element in the human body
as well as an...
Studying Slime
To make slime and observe its "non-Newtonian
fluid" properties. The slime made in this experiment
is similar to a product that used...
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National
Chemistry Week Experiments - Jr. High/High School