Question

व्हाट इज हार्ड in science​

Answer 1

Answer:

name the elements present in the PbCI2,Ba(OH)2,LiF

Answer 2

Answer:

The terms hard and soft refer strictly to the way the scientific method is used. According to Dictonary.com: hard science, noun. Any of the natural or physical sciences, as chemistry, biology, physics, or astronomy, in which aspects of the universe are investigated by means of hypotheses and experiments.