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Starter 1. What type of bonding is present in metals? 2. In what state do metals conduct? 3. What type of elements are present in covalent compounds? 4.

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Presentation on theme: "Starter 1. What type of bonding is present in metals? 2. In what state do metals conduct? 3. What type of elements are present in covalent compounds? 4."— Presentation transcript:

1 Starter 1. What type of bonding is present in metals? 2. In what state do metals conduct? 3. What type of elements are present in covalent compounds? 4. Write the formula for the following: a) Calcium phosphideb) Magnesium oxide

2 Conduction of Covalent Compounds Aim: To investigate which covalent compounds conduct electricity.

3 Method Wires 3v DC Bulb Carbon electrodes Beaker containing compound

4 Results: Compound Symbols for atoms in the compound Conductor or insulator? Sucrose Polystyrene Sucrose solution Polystyrene solution

5 Conclusion: Covalent compounds never conduct electricity whether they are solid or liquid. Carbon (only in the form of graphite) is the exception to this rule.

6 Covalent Bonding It exists between non-metals. It is a sharing of electrons. Each element wants to get a stable electron arrangement, i.e. one of the noble gases. Examples - Cl 2, NH 3, CH 4 etc…..

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