Final answer:
A technique chart is usually formulated by a series of trial and error processes, fitting within the framework of the scientific method, which makes the statement true. The belief that theories become laws over time is false as theories and laws serve different purposes in science. Experiments enable scientists to establish cause-and-effect relationships but are not without potential issues.
Step-by-step explanation:
The statement that a technique chart is formulated by a series of trial and error can be considered true. The process of developing a technique chart in medical or experimental applications often follows the scientific method. Initially, observational data is collected, which leads to formulating a hypothesis. Tests are then conducted, which may involve trial and error, to refine the technique and produce a reliable chart for future reference.
Regarding the statement "When a theory has been known for a long time, it becomes a law", this is false. Theories do not become laws over time. Instead, theories explain the reasons why certain phenomena occur, while laws describe the phenomena without necessarily explaining them. Laws are typically simpler and more universally accepted than theories.
Finally, the statement, "While experiments allow scientists to make cause-and-effect claims, they are not without problems", is true. Experiments can be subject to errors, bias, or confounding variables, thus they must be carefully designed and interpreted with caution.