Ions and Ionic Compounds

Why do ionic compounds NOT conduct electricity when they are in their solid state?

• Their ions are free to move.

• Their ions are held in fixed positions.

• Their electrons are free to move

• Their electrons are held in a fixed state

Tags

NGSS.MS-PS1-2

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.

Tags

NGSS.HS-PS1-3

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 which require a large amount of heat energy to overcome these strong bonds.

• They have weak bonds which require a little amount of heat energy to overcome these weak bonds.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

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.

Tags

NGSS.MS-PS1-1

Be and F can combine to form BeF₂, an ionic compound. Select ALL the true statements.

• Each Be atom loses two electrons from the outer shell.

• Each F atom gains two electrons from Be.

• The force holding the ionic compound together is electrostatic attraction.

• Each F ion has a charge of -1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Select all the true statements:

• Each outer shell electron in Cl is represented by a cross.

• In Na, the total charge is -2.

• Na+ and Cl- are held together by electrostatic attraction.

• Na+ has a full outer shell of electrons.

Tags

NGSS.MS-PS1-1

Match the following to form true statements:

• between ions in an ionic compound.

• When solid, ionic compounds

• high melting and high boiling points

• There are many strong bonds

• cannot conduct electricity

• Elements in group 1 of the periodic table form ions

• with a charge of 1+

• When melted ionic compounds

• can conduct electricity

• Ionic compounds have

This is an image of the giant ionic lattice representing Sodium Chloride, what is represented by the +?

• Cl ion

• Cl atom

• Na atom

• Na ion

Tags

NGSS.MS-PS1-1

Ionic bonds are formed between...

• Non - metals

• A metal and a non-metal

• Metals

A single crystal of table salt (Sodium Chloride) is one giant ionic lattice, the Na⁺ and Cl^- ions are held together in a _______ lattice.