1) Which statement about Atoms is true? a) Atoms have a positive charge b) The number of electrons in an atom is equal to the number of protons in the nucleus of that atom c) There are more electrons in an atom that there are protons in the nucleus of that atom d) There are fewer electrons in an atom than there are protons in the nucleus of that atom 2) If an atom loses one or more of its outer electrons, what happens to its overall charge? a) It becomes positive b) It becomes negative c) It stays the same d) It depends on the ion 3) Which subatomic particles are found in the nucleus of an atom? a) Protons and neutrons b) Neutrons and electrons c) Protons and electrons d) Electrons only 4) Which of the following make up the Atomic Mass of an element? a) The total number of protons and electrons b) The total number of protons and neutrons c) The number of protons only d) The number of neutrons only 5) What is different about the Isotopes of an element? a) The number of elecrons b) The number of protons c) They are exactly the same d) The number of neutrons 6) The result from the alpha particle scattering experiment led to which conclusion? a) The mass of an atom is concentrated at the centre in the nucleus and the nucleus is charged b) Atoms are tiny spheres that cannot be divided c) Electrons orbit the nucleus at specific distances d) most of the mass of the atom is found outside of the nucleus 7) Where are the electrons found in an atom? a) In the nucleus with the protons b) In the nucleus with the neutrons c) At a fixed distance from the nucleus d) In different energy levels (shells) around the nucleus 8) Which of the following makes up the Atomic Number of an element? a) The number of protons only b) The total number of protons and neutrons c) The total number or protons and electrons d) The number of neutrons only 9) Which subatomic particle is lost by an atom in order for it to become an ion? a) Proton b) Neutron c) Electron d) No particles lost, only gained 10) Why does an atom have no overall charge? a) An atom has the same number of electrons and protons b) An atom has more electrons that protons c) An atom has more neutrons than protons d) An atom has more protons than electrons

Atomic Structure

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