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QR Challenge: Year 9 Science Chapter 1.1 Atoms

Question	Answer
[Pg4] Each atom is made up of three types of subatomic particles: ____________________________.	protons, neutrons and electrons.
[Pg7] The New Zealand scientist Ernest Rutherford discovered that __________________________________________.	the nucleus only takes up a small fraction of the space inside an atom.
[Fig 1.1.11] The maximum number of electrons in the first shell is ___, second shell is ____, and third shell is _____.	2, 8, 18
[Pg5] The _____ charged electron is attracted to the _______ charged proton in the nucleus. This is called _________ attraction.	negatively, positively, electrostatic
[Pg9] Ernest Rutherford proposed an atomic model called_________.	the Nuclear model
[Pg9] Niels Bohr proposed an atomic model called_________.	the Planetary model
[Pg9] Philipp Lenard proposed an atomic model called_________.	the Dynamide model
[Pg9] Joseph John Thompson proposed an atomic model called_________.	the Plum Pudding model
[Pg6] Atoms that have the same number of ____ but different numbers of _____ are referred to as _________.	protons, neutrons, isotopes.
[Pg5]Scientists refer to the number of _____________ in the nucleus as the atomic number.	protons
[Pg5] The total number of ___________ and ___________ in the nucleus is the atom's _________ number.	protons, neutrons, mass
[Pg7] The electrons in an atom are attached to the ____ by the ________ charge of the protons. However, the electrons never ______ into the nucleus. This is because ______________________________________________.	see p7
[Pg6] The number of ________ surrounding the nucleus of an atom is exactly _____________ __ the number of ____________ in the nucleus. As a result, ___________________________.	see p6
[Fig 1.1.10] In Rutherford's experiment, a beam of ________________ was fired at ____________. Most went ______________ but a small number were ________________. He concluded that _____________.	see p7
[Pg6] The atomic number tells us the number of _________, which is the same as the number of ___________________.	electrons, protons