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The Nuclear Atom

QuestionAnswer
J.J. Thomson used a cathode-ray tube to discover the [...] J.J. Thomson used a cathode-ray tube to discover the electron
Physicist Ernest [...] set out to test Thomson's plum pudding hypothesis about the atom. Physicist Ernest Rutherford set out to test Thomson's plum pudding hypothesis about the atom.
Rutherford bombarded a piece of [...] foil with a beam of radiation containing alpha particles. Rutherford bombarded a piece of gold foil with a beam of radiation containing alpha particles.
In Rutherford's experiment, most of the alpha particles passed through he gold foil, but some of the particles were [...]. In Rutherford' experiment, most of the alpha particles passed through he gold foil, but some of the particles were deflected way off course.
Rutherford correctly concluded that the positive charge of the atom was [...] somewhere inside the atom, and not spread out as Thomson had suggested. Rutherford correctly concluded that the positive charge of the atom was densely concentrated somewhere inside the atom, and not spread out as Thomson had suggested.
Rutherford discovered that atoms have a [...] Rutherford discovered that atoms have a nucleus
The positively charged particles of an atom are called [...]. The positively charged particles of an atom are called protons.
The negatively charged particles of an atom are called [...]. The negatively charged particles of an atom are called electrons.
A proton has a charge of [...] A proton has a charge of +1
An electron has a charge of [...] An electron has a charge of -1
1 proton balances out [...] electron. 1 proton balances out 1 electron.
James [...] presented evidence that the nucleus was made up of protons and neutrons. James Chadwick presented evidence that the nucleus was made up of protons and neutrons.
neutrons have a charge of [...] neutrons have a charge of 0
The neutrally charged particles of an atom are called [...]. The neutrally charged particles of an atom are called neutrons.
The un-charged particles of an atom are called [...]. The un-charged particles of an atom are called neutrons.
There are [...] sub-atomic particles. There are 3 sub-atomic particles.
The sub-atomic particles are [...], neutrons, and electrons. The sub-atomic particles are protons, neutrons, and electrons.
protons and electrons have exactly [...] charges. protons and electrons have exactly opposite charges.
An electrically neutral atom will have the same number of protons and [...]. An electrically neutral atom will have the same number of protons and electrons.
Almost all the mass of an atom is in its [...]. Almost all the mass of an atom is in its nucleus.
electrons have almost no [...] electrons have almost no mass
Neutrons have about the same mass as [...]. Neutrons have about the same mass as protons.
The identity and properties of an element are determined by the number of [...] in each atom. The identity and properties of an element are determined by the number of protons in each atom.
The sub-atomic particles are protons, [...], and electrons. The sub-atomic particles are protons, neutrons, and electrons.
The sub-atomic particles are protons, neutrons, and [...]. The sub-atomic particles are protons, neutrons, and electrons.
Who conducted the gold-foil experiment? Rutherford
Created by: mr.shapard