science reviewer 3rd qrt exam Flashcards
(14 cards)
What are the building blocks of matter that make up everything we encounter every day?
Atoms
Who concluded that all matter is made of atoms of a given element that are identical in mass and properties?
Jhon Dalton
Who concluded that compounds are combinations of two or more different types of atoms.
John Dalton
Who concluded that his atomic model in 1897. His atomic model is commonly known as the “Plum Pudding Model.”
J.J. Thomson
Who believed that the electrons were like plums embedded in a positively charged “pudding” thus it was called the “plum pudding” model.
J.J. Thomson
Who created the Planetary Model of the Atom and was proposed in 1911 after his famous gold foil experiment
Ernest Rutherford
Whos model had orbiting electrons moving around the massive nucleus of the atom?
Ernest Rutherford
Whos model model introduced the nuclear model of an atom, in which he explained that a nucleus (positive charged) is surrounded by negatively charged.
Ernest Rutherford
Who’s theory modified the structure, explaining that electrons moved in fixed orbitals (shells) and not anywhere in between, and he also explained that each orbit (shell) has a fixed energy.
Bhors
What type of particles are portons, neutron, and electrons?
Subatomic Particles
What subatomic particle is “ = atomic number.”
Protons
What Subatomic particles are “ = protons + neutrons.”
Mass number
What Subatomic particle is “ = Atomic number - charge.”
Electrons
What Subatomic particle is “Mass number - Protons.”
Neutrons
