| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Atoms are very small, having a radius of about 1 x 10^-10 metres. |
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What is the radius of an atom? |
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The basic structure of an atom is a positively charged nucleus composed of both protons and neutrons surrounded by negatively charged electrons. |
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What is the structure of an atom, with charges for sub-atomic particles? Model an atom using plasticine. On the model show where most of the mass in concentrated and that most of the atom is empty space.
Describe the composition of an atom and draw a fully labelled diagram of an atom showing protons and neutrons in the nucleus with electrons outside the nucleus. |
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The radius of a nucleus is less than 1/10,000 of the radius of an atom. |
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How does the radius of an atom compare with the radius of the nucleus of an atom? |
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Most of the mass of an atom is concentrated in the nucleus. |
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Where is most of the mass of an atom concentrated? |
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The electrons are arranged at different distances from the nucleus (different energy levels).
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How do energy levels differ in terms of distance from the nucleus? |
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The electron arrangements may change with the absorption of electromagnetic radiation (move further from the nucleus; a higher energy level) or by the emission of electromagnetic radiation (move closer to the nucleus; a lower energy level) |
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What might cause the electron arrangements to change (from a lower to higher energy level, for example)? Use equipment to see how different coloured filters absorb different wavelengths of light
Research how absorption and emission spectra are formed. |
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