Cambridge AS & A Level Chemistry
9.2Periodicity of chemical properties of the elements in Period 3
Periodicity of chemical properties of the elements in Period 3 in Cambridge AS & A Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic47 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 9.2.1Describe, with equations, the reactions of the elements with oxygen, chlorine and (Na and Mg) water.
- 9.2.2Explain the variation in oxidation number of the oxides and chlorides by outer-shell electrons.
- 9.2.3Describe the reactions of the oxides with water and the pH of the solutions.
- 9.2.4Describe and explain the acid-base behaviour of the oxides and hydroxides, including amphoteric behaviour.
- 9.2.5Describe the reactions of the chlorides with water and the pH of the solutions.
- 9.2.6Explain these trends by bonding and electronegativity.
- 9.2.7Suggest the bonding in oxides and chlorides from their properties.
Lessons
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Period 3 elements: reactions with oxygen, chlorine and water
40 min
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Period 3 oxides and chlorides: bonding, acid-base behaviour and water
45 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Periodicity of chemical properties of the elements in Period 3 into a strength.
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