Observations are made in a test tube.
In vitro (in glass)
I believe you are looking for "in vitro" which means "in glass".
A culture tube or sample tube.
if an experiment is done in a test tube and hydrogen gas is given off if a lit splint is placed inside the test tube there will be a pop.
Twisting your test tube, Erlenmeyer flask, Florence flask, or beaker to mix chemicals when a stirring rod is unavailable
variable
I believe you are looking for "in vitro" which means "in glass".
A culture tube or sample tube.
the statement that is worded to test the experiment
an experiment.
A controlled experiment is used to test a hypothesis.
In scientific method the "prediction" is the theory that the scientific test (the experiment) is being conducted to prove (or disprove).
threshold level
The experiment that you will design is done to test the hypothesis.
An experimental setup is one that is done as a test or experiment to see if something works. These are done in business all the time.
The definition of an experiment is a procedure that is done in order to make a discovery, test a hypothesis, or test a known fact. An experiment is often the testing of a scientific theory, although it can be applied to other fields as well, as long as it meets the criteria of the definition.
An experimental setup uses the independent variable.
A test group is the group in an experiment to which the change is being applied and the control group is the same type of group in an experiment to which nothing is done to compare the changes in the test group to.