Ionic Compounds and Properties

The following properties are all characteristics of ionic compounds EXCEPT

• high melting and boiling points

• soft

• crystal lattice structure

• conduct electricity when dissolved in water

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NGSS.HS-PS1-3

Which of the following is a property of an ionic compound?

• high melting point
• soft
• malleable
• liquid at room temperature

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NGSS.HS-PS1-3

What type of forces hold on an ionic lattice together?

• Electrostatic attraction forces

• Covalent bond

• Metallic bond

• Van der Waals forces

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NGSS.HS-PS2-4

What properties does an ionic compound have?

• A low boiling point and it conducts electricity when dissolved in water

• A high melting and it conducts electricity when liquid

• A high boiling point and it conducts electricity when solid

Ionic compounds conduct electricity when dissolved in water. Which statement below best explains the property?

• Ions are free to move.

• Electrons are free to move.

• Bonds are strong.

• There are weak intermolecular forces of attraction.

Which three of the following are features of ionic compounds? (click 3 boxes)

• They have bonds between metals and non-metals.

• They have bonds between two non-metals.

• They form simple molecular structures.

• They form giant ionic lattices.

• They involve the transfer of electrons.

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NGSS.HS-PS1-3

Ionic compounds form giant ionic lattices. What forces hold the giant ionic lattices together?

• strong frictional forces between the surfaces of the atoms

• strong magnetic forces of attraction between the poles of ions

• strong electrostatic forces of attraction between oppositely charged ions

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NGSS.HS-PS2-4

Why do ionic compounds have high melting and boiling points?

• Their ions are free to move.

• Their ions are held in fixed positions.

• They have many strong bonds.

• They have many weak bonds.

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True or false? Ionic compounds have high melting points.

• true

• false

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True or false? Ionic compounds have low boiling points.

• true

• false

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NGSS.HS-PS1-3