Great Lesson Ideas - Chemistry - Thermit Reaction

Alastair Gittner introduces a lesson on joining railway tracks using a safe thermic reaction. The lesson engages students with questions about engineering solutions and demonstrates a reaction between zinc powder and copper oxide. Students conduct the experiment, observe the reaction, and analyze the results, learning about chemical reactions and the reactivity series. The lesson is adaptable for different student abilities, focusing on practical engagement and understanding of chemical processes.

What question does the teacher use to engage students at the beginning of the lesson?

• How do we join railway tracks?

• What materials are used in cars?

• What is the speed of a train?

• How are bridges constructed?

What is the main reason the classic thermic reaction is not performed by students?

• It is too expensive.

• It is inherently dangerous.

• It requires rare materials.

• It takes too long to complete.

Which two chemicals are used in the safer thermic reaction demonstrated in class?

• Carbon and potassium nitrate

• Zinc powder and copper oxide

• Iron oxide and aluminum

• Sulfur and magnesium

What safety equipment is emphasized during the experiment?

• Ear plugs

• Gloves

• Lab coats

• Safety goggles

What is observed when the reaction between zinc and copper oxide is complete?

• A bright green flame

• The formation of copper

• A loud explosion

• The production of water vapor

What is the educational value of the experiment according to the teacher?

• It helps students understand the reactivity series.

• It shows the process of photosynthesis.

• It teaches students about the periodic table.

• It demonstrates the properties of gases.

What is left over after the reaction and is poured down the sink?

• Zinc chloride

• Hydrochloric acid

• Water (H2O)

• Copper oxide