Chemiluminescence
Click on the correct answer.
1
Matter is said to be "luminescent" if
it absorbs light energy
it gives off light energy
the matter has a short lifetime
it can be used to conduct electricity
it warms up as it gives off light energy
2
The chemical reaction in this demonstration is
a redox reaction
a double replacement reaction
a decomposition reaction
a single replacement reaction
a combination reaction
3
Oxidation is said to occur
when a substance gives off light
when a substance loses electrons
whe a substance gains electrons
when another substance undergoes reduction
to the luminescing solution in this demonstration
4
Kinetics
studies how fast or slow something will occur
has to do with friction
will depend on temperature
involves light
has to do with solutions
5
The light doesn't last long because
Rachel did not pour the solutions fast enough
the chemicals are changed to new chemicals in the course of the reaction
the temperature was too cold
the lights had to be turned out
the solutions were in a large flask
6
Chemiluminescence has been known to occur in the chemical world
in just the past 2 years
not longer than 10 years ago
not longer than 50 years ago
not over 100 years ago
longer than 100 years ago
7
Chemiluminescent light is a special kind of light sometimes called
green light
blue light
hot light
cold light
electric light
8
In the demonstrations the chemical reaction does not start
until the lights go out
until the solution is swirled
until the solutions are mixed
until the solutions are shaken
until they are touched
9
Chemiluminescence
is only a laboratory phenomenon and does not occur in nature
is only a natural phenomenon which does not occur in the laboratory
is both a laboratory and a natural phenomenon
10
The chemicals in the demonstration
were organic chemicals
were relatively expensive chemicals
were oxidized
were reduced
were soluble in water