Ionic bonding (Edexcel GCSE Chemistry): Flashcards
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What is an ion?
What is an ion?
Atom/group of atoms with positive or negative charge
Why do atoms form ions?
Why do atoms form ions?
To achieve full outer shell of electrons (more stable)
What do metal atoms do to form ions?
What do metal atoms do to form ions?
Lose electrons from their outer shell
What charge forms when atoms lose electrons?
What charge forms when atoms lose electrons?
Positive (more protons than electrons)
Name for positive ions
Name for positive ions
Cations
What do non-metal atoms do to form ions?
What do non-metal atoms do to form ions?
Gain electrons to fill outer shell
What charge forms when atoms gain electrons?
What charge forms when atoms gain electrons?
Negative (more electrons than protons)
Name for negative ions
Name for negative ions
Anions
How do ionic bonds form?
How do ionic bonds form?
One atom transfers electrons to another
Which atom types form ionic bonds?
Which atom types form ionic bonds?
Metal and non-metal
What force attracts ions in ionic bonds?
What force attracts ions in ionic bonds?
Electrostatic forces
What structure do ionic compounds form?
What structure do ionic compounds form?
Giant ionic lattice
Melting/boiling points of ionic compounds
Melting/boiling points of ionic compounds
High (strong forces between ions)
Solubility of ionic compounds in water
Solubility of ionic compounds in water
Usually soluble
When do ionic compounds conduct electricity?
When do ionic compounds conduct electricity?
When melted or dissolved (ions free to move)