Examlex
The main advantage of experimental research over non experimental research is
a) it is easier to control the dependent variable
b) cause and effect relations can be tested
c) interaction between variables do not confound the study
d) one can collect more accurate information on the problem
e) none of the above
Mixture
A combination of two or more substances in which each substance retains its chemical identity and properties.
Homogeneous Mixture
A homogeneous mixture is a mixture in which the composition is uniform throughout, and the individual components are not visibly distinguishable.
Heterogeneous Mixture
A combination of substances that are not uniformly distributed and in which the individual components can be distinguished physically.
Nitrogen
A colorless, odorless gas that is the most abundant element in the Earth's atmosphere, essential for plant and animal life.
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