Simple molecular structures (Edexcel GCSE Chemistry): Flashcards
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Simple molecular structure definition
Simple molecular structure definition
A substance composed of millions of small molecules weakly attracted by intermolecular forces
Intermolecular forces definition
Intermolecular forces definition
Weak attractions between molecules, weaker than covalent bonds
Why low melting/boiling points in simple molecules
Why low melting/boiling points in simple molecules
Weak intermolecular forces require little energy to break
State of simple molecular substances at room temp
State of simple molecular substances at room temp
Often gases or liquids
Melting point of water ()
Melting point of water ()
Boiling point of water ()
Boiling point of water ()
Volatile substance definition
Volatile substance definition
Changes state (liquid to gas) easily
Why simple molecular substances are volatile
Why simple molecular substances are volatile
Weak intermolecular forces; molecules escape to gas easily
Common property of volatile substances
Common property of volatile substances
Strong smells (e.g., perfumes)
Electrical conductivity of simple molecules
Electrical conductivity of simple molecules
Do not conduct electricity
Why simple molecules don't conduct electricity
Why simple molecules don't conduct electricity
No free electrons; all used in covalent bonds
Examples of volatile substances
Examples of volatile substances
Perfumes, acetone