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Read the text about intrinsic silicon. Mark the following sentences as true (T) or false (F).

1. Semiconductor is practically the same as metallic conductor but with some special features.

2. Quartz and sand are mostly silicon oxide.

3. Silicon is the most widely used of semiconductors.

4. The manner in which the conductivity is altered isn’t important in determining the characteristics of devices fabricated in the silicon.

5. The two conduction mechanisms in intrinsic silicon are electron conduction and proton conduction.

Make a plan of the text starting from.

1. Introduction

2. Silicon is the most widely used and plentiful element.

3. …

Work in pairs. Ask your partner some questions based on the text. Make sure you use the correct auxiliary verb.

For example:

1. There are some specific properties that distinguish semiconductors. (can)

- Can you give the examples of some specific properties that distinguish semiconductors?

2. Silicon appears only in oxide compounds. (where)

3. …

Summarize the text “Intrinsic Silicon” in 250 words using your own plan.

For example: The difference in potential from one side of the junction to the other is cold the height of the potential barrier and is measured in volts.

Translate the text “New, Unusual Semiconductors is a Switch-Hitter” with a dictionary in writing remembering the meaning of new words appearing in the text.

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