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Anything that occupies space and has mass
Atom
Smallest unit of matter
Atom
Positive charge, located at the nucleus
Proton
Negative charge, outside nucleus, in energy levels (shells)
Electron
Neutral charge, located inside the nucleus
Neutron
Atomic Number
Total of protons + neutrons
Mass Number
He is the one who proposed the idea of "atomos" which means indivisible particles
Democritus
Who is the scientist who proposed the first atomic theory stating that atoms are tiny, solid, indivisible spheres?
John Dalton
He is the one who discovered electron.
J.J. Thomson or John Joseph Thomson
What experiment did Ernest Rutherford did?
Gold Foil Experiment
What is the proposed atomic model of J.J. Thomson
Plum Pudding Model
He is the one who discovered the nucleus
Ernest Rutherford
What is the proposed model of Heisenberg and Schrodinger?
Quantum Mechanical Model
What model did Niels Bohr proposed?
Planetary Model
James Chadwick
He is known for being the Father of modern Periodic Table. He arranged the elements by atomic mass.
Dmitri Mendeleev
He arranged the elements based on the atomic number.
Henry Moseley
A chart that shows elements' symbols, atomic numbers, and properties.
Periodic Table
Dysprosium have 66 atomic number and 74 neutrons. What is the formula and mass number?
Mass Number = Protons + Neutrons
Mass Number = 66 + 74
Mass Number = 140
A pure chemical substance that has only one type of atom only.
Element
Peanut butter is a type of what mixture?
Homogeneous
A mixture that is not uniform or not evenly distributed.
Heterogeneous Mixture
It has 2 or more elements that are chemically combined.
Compound
He is the one who proposed the law of Triads
Johann Döberener