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What is deliberately changed in an experiment?
The variable.
What will happen if a crucible containing a sample is heated with a very hot flame causing the sample to splatter out in a chemistry experiment?
The experimenter could get burned by the hot or caustic sample.
What sources of errors are there in a titration experiment?
1 solutions may contain impurities 2 take readings at eye level to avoid parallax errors 3 incorrect volume measurements made by the experimenter
Is it true that the reason a compound did not cause a bulb to light is because the substance did not dissolve in water?
It is possible. Unless there is ion formation (with the resultant mobility of the charge transferring units), the experimenter should not expect any circuit activity.
Why is it important to have a control group for scientific experiments?
Often, scientific experiments come about because a scientist has a hunch that something may be the case. In these circumstances, it is therefore vitally important to guard against the experimenter's expectations clouding the results, as he or she may have a tendency to see what he or she wants to see. The best way currently known to achieve this is the double-blind control method. Say there are 100 subjects. A chemist prepares 50 genuine pills, and 50 identical-looking pills that do not contain the substance being tested (placebos). He puts them into bottles labelled 1-100, as randomly as possible, taking note of which bottle has a real pill and which a placebo, but he does not show this list to the experimenter. Thus neither the experimenter nor the subject know whether the pill is real or not (double blind). Therefore, when the patient reports the effects and the experimenter does her examination, neither can be influenced by prior expectation. Once the results are in, they are tabulated against the list of who got what, and the true effectiveness can be assessed honestly. With life-preserving drugs, giving a placebo may not be an option, so some of the protocol's protection may have to be sacrificed, say by comparing with the recorded effects of previous drugs that were supposed to do the same thing.
In a scientific experiment the is the thing the experimenter deliberately change while observing.?
Independent variable. Apex
In a scientific experimenter is the thing the experimenter deliberately changes while observing?
Independent variable. Apex
In a scientific experiment the is the thing the experimenter deliberately changed while observing?
The independent variable.
In a scientific experiment what is the thing the experimenter deliberately changes while observing?
The independent variable.
In a scientific experiment the what is the thing the experimenter deliberately changed while observing?
The independent variable.
In a scientific experiment the what is the thing the experimenter deliberately changes while observing?
The independent variable.
What is the thing the experimenter deliberately changes while observing in a scientific experiment?
The independent variable.
In a scientific experiment the is the thing the experimenter deliberately changes while observing.?
Independent variable. Apex
In a scientific experiment the is the thing the experimenter deliberately changes while observing?
Independent variable. Apex
What is unobtrusive observations?
An unobtrusive observation is when an experimenter simply watches and takes notes of the behavior of the subject in either a natural or laboratory setting WITHOUT any kind of interaction between the experimenter and subject.This is the opposite of an obtrusive observation in which the experimenter DIRECTLY interacts with the subject. For example, in a social environment, the experimenter makes eye contact and smiles at an individual walking by to watch for a response. In an unobtrusive observation, the experimenter would simply watch the way the subject responds to other people but DOES NOT deliberately smile to watch for a response.
What is the independent variable in an experiment?
Independent variable is what you, the experimenter, change or enacts in order to do your experiment
Why does a variable change in a experiment?
The experimenter changes the independent variable. The dependent variable changes as a result.
