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WorksheetsHistorical Timeline of Atom
Total questions: 10
Worksheet time: 4mins
What are neutral atoms?
Neutral atoms have more protons than electrons
Neutral atoms have equal numbers of protons and electrons
Neutral atoms loses electrons
Neutral atoms gains electrons
Who discovered the negatively charged particle in an atom?
Ernest Rutherford
Neils Bohr
John Dalton
Sir Joseph John Thomson
Analogy
John Dalton: Billiard Ball Model
: Atomic Planetary Model
Sir Joseph John Thomson
Neils Bohr
Erwin Schrodinger
Ernest Rutherford
What is the smallest unit that makes up matter?
Atom
Cell
Unit
molecules
Which of the following statements is not included in the Atomic Theory of John Dalton?
All matter is composed of extremely small particles called atoms.
Atoms cannot be subdivided, created, or destroyed.
Atoms of different elements can combine in simple whole number ratios to form chemical compounds.
Atoms of same element differ in size, mass, and other properties.
What are the 3 major subatomic particles of atom?
electron
proton
neutron
molecule
element
Who discovered the uncharged subatomic particle inside an atom?
James Chadwick
Ernest Rutherford
Erwin Schrodinger
Neils Bohr
Which if the following is the Nuclear Model of an atom?
Which if the following is Atomic planetary Model of an atom?
Who was the first person to conduct experiment proving the existence of atom?
John Dalton
Ernest Rutherford
Erwin Schrodinger
Sir J.J Thomson
