Physics and Chemistry relationship

In summary, chemistry and physics have different focuses and applications, but there is no contradiction between the theories used in each field to explain reality. Both fields continue to question and refine their understanding, while dismissing theories that have been proven incorrect. However, the role of questioning and challenging theories is important in advancing scientific knowledge.
  • #1
Noziroh
Hi, I'm no expert and I'm still in high school, but I'm curious about the relationship between physics and chemistry. As far as I know Chemistry is based on atomistic theory, right? Well, I'm wondering does physics support atomistic theory entirely or there are some parts of this theory that are not welcomed in physics? And are physicists trying to come up with a theory that will prove atomistic theory wrong?
 
Chemistry news on Phys.org
  • #2
atomic theory is extremely well accepted and not up for debate in any way.

here's the difference between chemistry and physics:

chemists care about the properties of materials at the length scale from micrometer to angstrom - the size of a bacteria to the size of an atom. this is the length scale that quantum mechanics starts to dominate, and in my opinion more importantly, where behavior is significantly influenced by thermal fluctuations. This is the scale where everything in chemistry happens: solvation, foaming, reactivity, diffusion, self assembly, protein folding, crystallization, etc. Chemists apply this knowledge to design things that require molecular, nano or micro level precision - new nanomaterials, thin films, medicines, sensors, semiconductor processing techniques, medical implants, etc.

Most of the "easy" theory in chemistry is already taken care of. The "hard" theories remain but they're not things that beginners would even understand why it is a problem. These are things like the biopolymer folding problem, abiogenesis, the scaling problem (why do molecules of foams, micelles, proteins, etc. assemble into higher level structures and how do we predict the transition point?) which are extremely specific and hard to answer. For example we have surfactants that, at low concentrations, just dissolve into water. but at higher concentrations, they start forming micelles, and then assemble into surface foams. How do we predict, without doing any experiments and just using a computer and theory, what that critical concentrations are and what the entire mixture looks like at any given point? Or, how do we predict, without doing any experiments, what the structure of any arbitrary protein is?

physics care about ALL length scales, and ALL properties, not just those of materials. for example physicists study black holes. that's on the kilometer-light year length scale and a black hole is not made of any material. they also care about far smaller things like quarks, which are useless in chemistry.
 
  • #3
chill_factor said:
atomic theory is extremely well accepted and not up for debate in any way.

When did theories become facts?
 
  • #4
Physicist is happy when he can prove argon and nitrogen are gases behaving in the same way. Chemist is happy when he can prove argon and nitrogen are gases behaving in a different way.

While physicists and chemists concentrate on different areas and different applications, there is no single property/area where they would use contradicting theories to describe the reality. It wasn't always this way, but the differences has its source in the fact we did not understood the reality. Once we start to really understand what is going on, it is not difficult to falsify incorrect theory and once it is falsified it is usually dropped as useless.

Sometimes those falsified theories are still used if they are much simpler - but then we know their limitations and use them only where they work.
 
  • #5
mesa said:
When did theories become facts?

you know the theory of gravity? you can debate it if you want. the point is that gravity keeps working. atomic theory works because you drive a car. if it didn't, the crude oil that got out of the ground could not be refined to gasoline.
 
  • #6
chill_factor said:
you know the theory of gravity? you can debate it if you want. the point is that gravity keeps working. atomic theory works because you drive a car. if it didn't, the crude oil that got out of the ground could not be refined to gasoline.

I'm not argueing the soundess of atomic theory, I am saying questioning science is how knowledge is gained. Not challenging theories stifles progress, without it we could still be stuck in the Caloric.

If anything is 'not up for debate' it is this.
 
  • #7
While in general you are right, it is exactly this argument that is abused by crackpots stating "theory X is wrong".
 
  • #8
mesa said:
I'm not argueing the soundess of atomic theory, I am saying questioning science is how knowledge is gained. Not challenging theories stifles progress, without it we could still be stuck in the Caloric.

If anything is 'not up for debate' it is this.

most chemistry have already been proven beyond doubt. most of the rest only has niche application. chemistry is currently an applied science where the known theories are applied, either with experimental or computational methods. Indeed the vast bulk of science is applying known theories to unknown situations where those theories are known to exist and using that knowledge to design useful products.
 
  • #9
chill_factor said:
most chemistry have already been proven beyond doubt

Again, I am not argueing the soundness of these theories. What I am saying is statements like this have no place in science, for someone of your background I would expect better.

Borek said:
While in general you are right, it is exactly this argument that is abused by crackpots stating "theory X is wrong".

I am sure that is frustrating and I certainly have seen this on the forums (including many cleanups involving yourself Borek), but crackpots have a tendency to be easy to pick out.

Questioning our understanding helps science bear more fruit, it's too important to bypass even if you have to deal with the occasional nut. Without it we would probably still be stuck in the Aether.
 

1. What is the difference between physics and chemistry?

Physics and chemistry are both branches of natural science, but they focus on different aspects of matter and energy. Physics deals with the study of matter, energy, and the fundamental laws that govern their interactions. Chemistry, on the other hand, focuses on the composition, properties, and reactions of substances.

2. How are physics and chemistry related?

Physics and chemistry are closely related because they both involve the study of matter and energy. Physics provides the fundamental principles and laws that govern matter and energy, while chemistry applies these principles to study the structure, properties, and reactions of different substances.

3. Can physics explain chemical reactions?

Yes, physics plays a crucial role in understanding chemical reactions. The behavior of atoms and molecules during a chemical reaction is governed by the laws of physics, such as thermodynamics, quantum mechanics, and electromagnetism.

4. How do chemistry and physics overlap?

Chemistry and physics overlap in many areas, such as thermodynamics, quantum mechanics, and spectroscopy. These fields are essential in understanding chemical reactions, the properties of substances, and their interactions with energy.

5. Why is it important to study both physics and chemistry?

Studying both physics and chemistry is important because they provide a comprehensive understanding of the natural world. Together, they help us understand the behavior of matter and energy, from the smallest particles to the largest structures in the universe. This knowledge is crucial in fields such as medicine, materials science, and environmental science.

Similar threads

Replies
12
Views
409
Replies
2
Views
1K
  • STEM Academic Advising
Replies
14
Views
1K
  • STEM Academic Advising
Replies
3
Views
325
Replies
8
Views
931
  • Science and Math Textbooks
Replies
3
Views
3K
  • STEM Academic Advising
Replies
4
Views
848
  • STEM Academic Advising
Replies
2
Views
734
Replies
2
Views
680
Back
Top