| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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The relative electrical charges of the particles in atoms are:
Proton +1
Neutron 0
Electron -1 |
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What are the relative electrical charges of each sub-atomic particle? modelling the structure of an atom to show the number of PEN in elements. extension ions. |
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Atoms have no overall electrical charge. |
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Why do atoms have no overall charge? |
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In an atom, the number of electrons is equal to the number of protons in the nucleus. |
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If an atom has 9 protons, how many electrons would it have? |
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The number of protons in an atom of an element is its atomic number. |
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What does the atomic number of an element tell us? |
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All atoms of a particular element have the same number of protons. |
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What do all atoms of a particular element have in common? |
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Atoms of different elements have different numbers of protons. |
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What are the differences between an atom of Nitrogen and an atom of Carbon. What is it that makes them unique elements? |
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Students should be able to use the nuclear model to describe atoms. |
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How does the current nuclear model describe an atom? |
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The radius of a nucleus is less than 1/10 000 of that of the atom (about 1 x 10-14 m). |
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How large is the radius of the nucleus of an atom in comparison to its total radius? |
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Almost all of the mass of an atom is in the nucleus. |
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Where is the majority of the mass of the atom found? |
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The relative masses of protons, neutrons and electrons are:
Proton 1
Neutron 1
Electron Very small |
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What are the relative masses of each subatomic particle (proton, neutron and electron)? |
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The sum of the protons and neutrons in an atom is its mass number. |
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What does the mass number of an atom tell us about that atom? |
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