Chemistry Bonding

How many bonding pairs are present in this covalent molecule?

• 1

• 2

• 3

• 4

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How are covalent bonds formed?

• Pairs of electrons are shared

• Electrons are transferred from one atom to another

• Strong attraction between negative delocalised electrons and positive ions

How are ionic bonds formed?

• Pairs of electrons are shared

• Electrons are transferred from one atom to another

• Strong attraction between negative delocalised electrons and positive ions

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Which statement correctly explains why most covalent substances have low melting/boiling points?

• There are strong electrostatic attractions

• There are weak intermolecular forces

• Covalent bonds are weak

• There are no strong bonds

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Which statement correctly explains why ionic compounds have high melting/boiling points?

• There are strong electrostatic attractions

• There are weak intermolecular forces

• Ionic bonds are weak

• There are strong intermolecular forces

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What type of bonding involves metals ONLY?

• Ionic

• Covalent

• Metallic

What type of bonding involves non-metals ONLY?

• Ionic

• Covalent

• Metallic

What type of bonding involves metals and non-metals?

• Ionic

• Covalent

• Metallic

Which statement correctly explains why ionic compounds conduct electricity as a LIQUID?

• Ionic compounds contain delocalised electrons which can move throughout the structure

• Ions are free to move

• Ions are fixed in position

• Ionic compounds contain an electrical current

Which statement correctly explains why ionic compounds DO NOT conduct electricity as a SOLID?

• Ionic compounds contain delocalised electrons which can move throughout the structure

• Ions are free to move

• Ions are fixed in position

• Ionic compounds are not magnetic

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