Actually never, a theory is always in danger of being replaced by a better explanation.
This does not invalidate the theory, it just means it was not as comprehensive and explanation of observations as was thought.
An example of this is Newtons laws of gravity, they are still usable but we now know that Einstein's space/time bending by the mass of an object is a more comprehensive explanation.
Chemistry is considered to be a physical science.
Science is knowledge. Theories are tested for veracity (truthfullness) and if they are found to be true and cannot be proven false they become the body of science.
A theory can be disproved, but despite the weight of evidence in its favour, it can never be proved.
A hypothesis that has been well tested and is considered to probably be true.
nothing is completely true cause there are so many answers people don't know. like is there a god? or what really made the dinosaurs die out?
You create a theory. Prove the theory to be true by testing it. If it works, it is true. If it does not work, it is not true.
Is a scientific theory but many people believe is true
In science, the word "theory" is USUALLY used for well-established theoretical frameworks, that are generally accepted as being true. This is the case with the theory on protoplanets - it is generally held to be true.
It's absolutely true that the only perfect science is hindsight.
Chemistry is considered to be a physical science.
because he is the only creator of everything that exist, even the true science he created it,and the true science is the one that exist not only a theory.
Science is knowledge. Theories are tested for veracity (truthfullness) and if they are found to be true and cannot be proven false they become the body of science.
If it is true science, it is 100% provable. That said, there is a large chunk of science that is still theory - it looks like it's headed in the right direction, but it is not provable, as of yet. That is not considered true science, least of all by scientists. But it gives them something to go on.
yes.
In science 'Theory' Refers to the best hypothesis, accepted as true until something better comes along.
Because it was just a theory and never been prove it can't be good or bad but it just a theory after all. and if this theory real and why don't they see what will happened in future!
None of the following options necessarily imply that an idea is absolutely true. Ideas can be supported by evidence, logic, and reasoning, but there is always a degree of uncertainty and room for error in any claim of absolute truth.