Ionic bonding (Edexcel GCSE Chemistry Combined Science): Flashcards
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Definition of an ion
Definition of an ion
Atom or group of atoms with a positive or negative charge
Why atoms form ions
Why atoms form ions
To achieve a full outer shell of electrons (more stable)
Definition of a cation
Definition of a cation
A positively charged ion
What metal atoms do with electrons
What metal atoms do with electrons
Lose electrons
Definition of an anion
Definition of an anion
A negatively charged ion
What non-metal atoms do with electrons
What non-metal atoms do with electrons
Gain electrons
How ionic bonds form
How ionic bonds form
One atom transfers electrons to another
Types of atoms in ionic bonding
Types of atoms in ionic bonding
Metal and non-metal
Why cations are positively charged
Why cations are positively charged
More protons than electrons
Why anions are negatively charged
Why anions are negatively charged
More electrons than protons
Forces holding ions together
Forces holding ions together
Electrostatic forces
Structure of ionic compounds
Structure of ionic compounds
Giant ionic lattice
Melting points of ionic compounds
Melting points of ionic compounds
High melting and boiling points
When ionic compounds conduct electricity
When ionic compounds conduct electricity
When melted or dissolved in water
Solubility of ionic compounds in water
Solubility of ionic compounds in water
Usually soluble