Page 1 - Home Assignment 3.Practical Worksheet

SAI International School

Subject-Chemistry
Ch-Is Matter around us pure?
Topic- Elements, Mixtures and Compounds

Practical Worksheet

Name: AdmNo: Class/Sec: ( )
Dt:_________________

Sulphur 硫 , Iron 鐵 , Iron (II) Sulphide 硫化鐵(II)
1. What were the colors of sulphur, iron, mixture of sulphur and iron, and iron (II)
sulphide?

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2. How did you separate iron from sulphur in their mixture?

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3. A student says that all pure substances are elements. Do you agree? Why or why
not?

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4. A. Read the passage below and answer the questions that follow:

There are four substances, A, B C and D. A and C are pure substances. They
cannot be broken

down into anything simpler by chemical methods. B consists of A and D, which are
not

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