Structure of atoms
Neutral particle of the atom
Neutron
This is where neutrons and protons are found
Nucleus
Philosopher who proposed the idea of an atom as a indivisible ball
Democritus
What did Lavoisier contribute to the History of the Atom
law of conservation of mass
Protons have what charge?
Positive
Name of the unit of measure of the mass of a proton
Atomic Mass Unit (amu)
What is the atomic mass of an atom?
The amount of protons and neutrons of an atom
Scientist who proposed the idea of the atom as an indivisible ball which make up all matter
Dalton
Who didn't use any experiment to prove what he proposed about the existence of atoms?
Democritus
What is the only subatomic particle that is NOT in the nucleus?
Electrons
What did Dalton contribute to the History of the Atom
pioneering the theory of atomism (a theoretical approach that regards something as interpret able through analysis into distinct, separable, and independent elementary components
What did JJ Thompson discover about the atom?
electron and plum pudding model
Scientist who discovered the existence of electrons
Thomson
What did the cathode-ray experiment proved?
The existence of electrons
Explain the structure of Hydrogen
1 proton and 1 electron, no neutron
This is where electrons can be located outside the atom surrounding the nucleus
Energy levels (Energy shells)/Orbits
What was Rutherford known for contributing?
postulated the nuclear structure of the atom, discovered alpha and beta rays
How does Rutherford's model compare with Thomson's?
Rutherford model has a nucleus and in Thomson model looks like a chocolate-chip cookie
What did the gold-foil experiment proved about the atoms?
That atoms are mostly empty space with electrons surrounding the nucleus.
Spell the name of Be
Beryllium
Atoms have the same amount of these particles, making them neutrally charged overall
Protons and electrons
True or false, John Dalton was a Quaker.
True
The forces that hold atoms or ions together in a compound
Chemical bonds
What holds the structure of an atom together
Electrostatic forces
This experiment proved that atoms consisted largely of empty space, with just a few electrons on the outside, and a nucleus on the inside.
Gold foil experiment