Forming bonds (AQA GCSE Chemistry): Flashcards
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Practise the cards
15 cards from this deck
Why noble gases are unreactive
Why noble gases are unreactive
They have full outer electron shells
Number of main types of strong chemical bonds
Number of main types of strong chemical bonds
Three
When do ionic bonds form?
When do ionic bonds form?
When metals react with non-metals
What metal atoms do in ionic bonding
What metal atoms do in ionic bonding
Lose their outer electrons
What non-metals become in ionic bonding
What non-metals become in ionic bonding
Negative ions
What metals become in ionic bonding
What metals become in ionic bonding
Positive ions
What holds ions together in ionic bonds?
What holds ions together in ionic bonds?
Opposite charges attract strongly
When do covalent bonds form?
When do covalent bonds form?
When non-metal atoms join with other non-metal atoms
How covalent bonding works
How covalent bonding works
Atoms share electrons between them
Why electron sharing helps in covalent bonding
Why electron sharing helps in covalent bonding
Gives both atoms a full outer shell
Where metallic bonds form
Where metallic bonds form
In metals and metal alloys
What structure do metal ions form in metallic bonding?
What structure do metal ions form in metallic bonding?
Regular 3D pattern called a lattice
What electrons do in metallic bonding
What electrons do in metallic bonding
Move freely throughout the lattice
Strength of ionic, covalent & metallic bonds
Strength of ionic, covalent & metallic bonds
All three types are strong
What electrons do in ionic bonding
What electrons do in ionic bonding
Transfer from metal to non-metal atoms