Video lecture (English) of C08 Air, Water, and Metals
C08 Air, Water, and Metals
What’s on the Specification
C17.1 Know and be able to use the composition of dry air, and understand that fractional distillation can be used to separate the components of air.
C17.2 Know the origins and describe the effects of greenhouse gases such as $\mathrm{CO}_2$ and $\mathrm{CH}_4$.
C17.3 Know the origins and effects of gaseous pollutants such as $\mathbf{C O}$, $\mathrm{CO}_2, \mathrm{SO}_2$ and $\mathrm{NO}_{\mathrm{x}}$.
C17.4 Know the purpose of chlorine and fluoride ions in the treatment of drinking water.
C7.1 Know the physical and chemical properties of the alkali metals (Group $1$), the halogens (Group $17$) and the noble gases (Group $18$).
C7.2 Describe the trends in chemical reactivity and physical properties of the alkali metals (Group $1$) and make predictions based on those trends. This includes knowledge of the relative positions of lithium, sodium and potassium in Group $1$.
C7.3 The halogens (Group $17$):
a. Describe the trends in chemical reactivity and physical properties of the halogens and make predictions based on those trends. This includes knowledge of the relative positions of fluorine, chlorine, bromine and iodine in Group $17$.
b. Explain what is meant by a displacement reaction, in terms of reactivity competition, between halogens and halide ions.
Learning Objectives
• Know the composition of dry air.
• Understand the effects of greenhouse gases, such as carbon dioxide and methane.
• Understand the effects of gaseous pollutants, such as carbon monoxide, carbon dioxide, sulfur dioxide, and nitrogen oxides.
• Know the use of chlorine and fluoride ions in the treatment of drinking water.
• Know the physical and chemical properties of alkali metals (Group $1$), the halogens (Group $17$) and the noble gases (Group 18).
• Describe the trends in chemical reactivity and physical properties of alkali metals (Group $1$), including lithium, sodium and potassium. Use those trends to make prediction.
• Describe the trends in chemical reactivity and physical properties of halogens (Group $17$), including fluorine, chlorine, bromine and iodine. Use those trends to make prediction.
• Explain a displacement reaction, in terms of reactivity competition, between halogens and halide ions.
Suggested Time
| Task | No. of Questions | Suggested Time |
|---|---|---|
| Examples | 6 | 15 min |
| Quiz | 10 | 20 min |
| Practice A | 15 | 40 min |
| Practice B | 12 | 25 min |
| Total | 43 | approx. 1-2hrs |
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