Two chemical reactions

Two chemical reactions often done at school are the reaction of iron filings with sulphur and the reduction of copper (II) oxide with carbon. Answers to the questions posed below will be given in the next blog.

1. The reaction of iron filings with sulphur

Iron filings and sulphur

Iron filings and sulphur

The reaction is hot!

The reaction is hot!

How can you tell that the reaction produces a lot of heat?

What is the name of the product?  Will it be magnetic like the iron filings?

The product of the reaction

The product of the reaction

2. The reduction of copper (II) oxide with carbon

A mixture of copper (II) oxide and carbon

A mixture of copper (II) oxide and carbon

Mini volcano!

Mini volcano!

How can you tell that the reaction produces a lot of heat?

What are the products of this reaction? What will the contents of the test-tube look like when it has cooled down?

What is the new brown coloured material?

What is the new brown coloured material?

Two exothermic reactions often carried out in school.

Can you write equations for these two reactions?

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