Chemistry
Head of Science Alastair Gittner, sets up the lesson by asking his students to consider how railway tracks are joined together, using their knowledge of the reactivity series. The classic thermit reaction between iron oxide and aluminium is too dangerous for the students to carry out, so instead the...
| Other Authors: | Glasshead Television and Web. |
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| Format: | Electronic |
| Language: | English |
| Published: |
[England] :
Teachers TV/UK Department of Education,
2010.
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| Physical Description: |
1 online resource (18 min.). Previously released as DVD. |
| Series: |
Education in video.
Great lesson ideas ; 1. Great lesson ideas ; 2. Great lesson ideas ; 3. |
| Subjects: |
| Summary: |
Head of Science Alastair Gittner, sets up the lesson by asking his students to consider how railway tracks are joined together, using their knowledge of the reactivity series. The classic thermit reaction between iron oxide and aluminium is too dangerous for the students to carry out, so instead they react zinc and copper oxide. Mixing small quantities of zinc powder and copper oxide together, then lighting the mixture, results in a bright exothermic reaction. Students can observe a chemical reaction taking place, as well as a new substance being made.Alastair, a science teacher at Stocksbridge High School, uses this experiment across the year groups. There are some safety precautions, such as using ceramic heat proof mats and ensuring students are wearing safety glasses. The reaction produces a lot of smoke, so the lab must be well ventilated. Chemistry teacher Jack Forrest carries out a number of quick and simple experiments with his year 7's to reinforce the idea that mass is always conserved. First, students mix colourless solutions of potassium iodide and lead nitrate together, to form a bright yellow mixture, clearly showing a chemical reaction has taken place. They weigh the solutions before and after mixing and observe that mass remains the same. Jack then demonstrates a classic Carbonate reaction, reacting marble chips and hydrochloric acid. Knowing mass is conserved; the group discuss why the mass decreases in this reaction. Finally, he finishes of by cooking popcorn kernels, which increase in volume when boiled, but the mass stays the same. Jack, a chemistry teacher at Stocksbridge High School finds these short, snappy experiments work well with lower age groups. Chemistry teacher Paul Grooby kicks of the lesson with a starter demonstration, adding potassium permanganate to a series of glasses containing different reagents, to start a chemical reaction and get a colour change. Paul then demonstrates the effect of universal indicator, before setting the class the challenge of creating three different solutions. Using different acid and alkalis and universal indicator, the students will need to create three solutions the colour of traffic lights. The students will need to use a trial and improvement methodology to get the right colours.Paul, a chemistry teacher at Woodkirk High School, finds that all students are able to create a red and green colour, but creating the orange solutions tests the most able students. |
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| Item Description: |
Title from resource description page (viewed Mar. 5, 2012). Head of Science Alastair Gittner, sets up the lesson by asking his students to consider how railway tracks are joined together, using their knowledge of the reactivity series. The classic thermit reaction between iron oxide and aluminium is too dangerous for the students to carry out, so instead they react zinc and copper oxide. Mixing small quantities of zinc powder and copper oxide together, then lighting the mixture, results in a bright exothermic reaction. Students can observe a chemical reaction taking place, as well as a new substance being made.Alastair, a science teacher at Stocksbridge High School, uses this experiment across the year groups. There are some safety precautions, such as using ceramic heat proof mats and ensuring students are wearing safety glasses. The reaction produces a lot of smoke, so the lab must be well ventilated. Chemistry teacher Jack Forrest carries out a number of quick and simple experiments with his year 7's to reinforce the idea that mass is always conserved. First, students mix colourless solutions of potassium iodide and lead nitrate together, to form a bright yellow mixture, clearly showing a chemical reaction has taken place. They weigh the solutions before and after mixing and observe that mass remains the same. Jack then demonstrates a classic Carbonate reaction, reacting marble chips and hydrochloric acid. Knowing mass is conserved; the group discuss why the mass decreases in this reaction. Finally, he finishes of by cooking popcorn kernels, which increase in volume when boiled, but the mass stays the same. Jack, a chemistry teacher at Stocksbridge High School finds these short, snappy experiments work well with lower age groups. Chemistry teacher Paul Grooby kicks of the lesson with a starter demonstration, adding potassium permanganate to a series of glasses containing different reagents, to start a chemical reaction and get a colour change. Paul then demonstrates the effect of universal indicator, before setting the class the challenge of creating three different solutions. Using different acid and alkalis and universal indicator, the students will need to create three solutions the colour of traffic lights. The students will need to use a trial and improvement methodology to get the right colours.Paul, a chemistry teacher at Woodkirk High School, finds that all students are able to create a red and green colour, but creating the orange solutions tests the most able students. Previously released as DVD. This edition in English. FLC - Alexander Street Academic Video Online license. |
| Physical Description: |
1 online resource (18 min.). Previously released as DVD. |