A body of knowledge must be in order to be considered science.

realistic and reliable
observable and testable
factual and testable
believable and reliable

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process