Calcium (Ca) is a Pure Element of the 'Alkaline Earth Metal' group and, is a Solid under normal conditions of Temperature and Pressure.olid, liquid and gas are states or phases of an element or substance. But most substances can exist in all three states depending on temperature and pressure.
A hypothesis is. A) a tentative explanation for a set of observations that can be tested by further experimentation. B) a statement describing a relationship between phenomena that is always the same under the same conditions. C) a unifying principle that explains a body of facts and relations. D) a model used to visualize the invisible.
A scientific hypothesis is the initial building block in the scientific method. Many describe it as an âeducated guess,â based on prior knowledge and observation. While this is true, the definition can be expanded. A hypothesis also includes an explanation of why the guess may be correct, according to National Science Teachers Association.