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Answers
3.SMBOL-a sign object etc.which represent something.
Answer:
1) Scientific method
Method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
2) Solidification
Freezing is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point. In accordance with the internationally established definition, freezing means the solidification phase change of a liquid or the liquid content of a substance, usually due to cooling.
3) Symbol
A sign, object, etc. which represents something.
4) Hypothesis
An idea that is suggested as the possible explanation for something but has not yet been found to be true or correct.
5) Porous solid
A porous medium or a porous material is a material containing pores. The skeletal portion of the material is often called the "matrix" or "frame". The pores are typically filled with a fluid.
Explanation:
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