Small molecules (AQA GCSE Chemistry): Flashcards
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Practise the cards
12 cards from this deck
What bonds form small molecules?
What bonds form small molecules?
Covalent bonds
Bond strength: inside vs between small molecules
Bond strength: inside vs between small molecules
Strong inside, weak between
Dot-and-cross diagrams show
Dot-and-cross diagrams show
Shared electrons and lone pairs
2D diagrams show bonds as
2D diagrams show bonds as
Simple lines between atoms
Ball & stick models show
Ball & stick models show
3D arrangement in space
Why small molecules have low melting points
Why small molecules have low melting points
Weak intermolecular forces
Small molecules at room temp are usually
Small molecules at room temp are usually
Gases or liquids
Do small molecules conduct electricity?
Do small molecules conduct electricity?
No, no overall charge
Bigger molecules have ___ intermolecular forces
Bigger molecules have ___ intermolecular forces
Stronger
What breaks when small molecules melt?
What breaks when small molecules melt?
Intermolecular forces (not covalent bonds)
state at room temp
state at room temp
Solid
Why solid but gas at room temp?
Why solid but gas at room temp?
larger so stronger intermolecular forces