Cambridge AS & A Level Chemistry
1.1Particles in the atom and atomic radius
Particles in the atom and atomic radius in Cambridge AS & A Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 1.1.1Describe the atom as mostly empty space around a small dense nucleus of protons and neutrons, with electrons in shells.
- 1.1.2Give the relative charges and relative masses of protons, neutrons and electrons.
- 1.1.3Use the terms atomic (proton) number and mass (nucleon) number.
- 1.1.4Describe how mass and charge are distributed in an atom.
- 1.1.5Describe how beams of protons, neutrons and electrons at the same velocity behave in an electric field.
- 1.1.6Find the numbers of protons, neutrons and electrons in atoms and ions.
- 1.1.7State and explain qualitatively the trends in atomic and ionic radius across a period and down a group.
Lessons
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The nuclear atom, sub-atomic particles and isotopes
30 min
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Sample question
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Turn Particles in the atom and atomic radius into a strength.
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