Science Flashcards
Exam
What are particles of matter?
Tiny constituents that make up all physical substances in the universe.
Solid Sphere Model
Atoms are invisible and compunds are combinations of different types of atoms.
Atomism
All matter is composed of small invisible particles called atom.
Plum pudding model
The positive and negative charges are embedded within it.
Made by John Dalton, 1803
Solid Sphere Model
Made by Democritus in 51th century BC
Atomism
Made by J.J Thompson in 1897
Plum pudding model
Electrons orbiting in a set. Predictable paths around changes nucleus.
Nuclear model
Electrons are arranged in concentric specific orbits around the nucleus
Planetary Model
Made by Erwin Schrodinger in 1926
Quantum Model
Made by Niesis bohr in 1913
Planetary model
The beations of the electrons could only be describe as being part of a cloud around the nucleus
Quantum model
Made by Ernest Rutherford in 1911
Nuclear Model
a tiny constituents that make up all physical substances in the universe
Particle of matter
