A scientist who studies crystals is known as a Crystallographer.
A scientist who studies water (H2O) would be a hydrologist or a water chemist.
Chemist or Physicist
A scientist who studies matter is called a physicist. Physicists explore the properties and behavior of matter and energy through research and experimentation.
A scientist who studies matter is called a physicist. Physicists study the properties and behavior of matter and energy in the universe.
A person who studies chips is typically referred to as a food scientist or a food technologist, specializing in the field of snack food production and development.
The name of a scientist that studies sports is called a sports scientist.
An arachnologist
A virologist is a scientist who studies viruses.
A scientist who studies animals is called a zoologist.
A scientist who studies radioactivity is called a nuclear physicist or a radiologist.
A scientist who studies animal life is a zoologist. There is no particular name for a scientist that specialises in platypuses.
The name for this type of scientist is a teuthologist
This answer is a entomologistA scientist who only studies fish is called an ichthyologist.
Parasitologist
A botanist
environmentalist
Astronomer