Which term is used to describe a fact that has always been observed true but could at some future time not be observed as true. a. hypothesis b. theory c. law

Theory is used to describe a fact that has always been observed true but could at some future time not be observed as true.

Option: (B)

Explanation:

Hypothesis is a guess that is based upon the observation. Hypothesis is an idea that might occur in future but doesn’t fall in present theory. Generally hypothesis is not based upon facts and also they aren’t proved. Interpreting certain fact is theory. Theories are only the explanation of something but facts is observable.Theory is something like a concept or idea that is observed to be true at present may fail in near future. Law is absolute and true. Generally, they are represented by mathematical expression or equation. For example, Newton's law, Law of gravity, Law of thermodynamics.

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.