Small molecules (AQA GCSE Chemistry): Quizzes
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11 questions from this quiz
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Practise the questions
11 questions from this quiz
What type of bonds join atoms together to form small molecules?
What type of bonds join atoms together to form small molecules?
Covalent bonds
Which statement correctly describes bonding in small molecules?
Which statement correctly describes bonding in small molecules?
Strong bonds inside, weak forces between
What do dot-and-cross diagrams show that other representations do not?
What do dot-and-cross diagrams show that other representations do not?
Shared electrons and lone pairs
What feature do two-dimensional diagrams NOT show?
What feature do two-dimensional diagrams NOT show?
Lone pairs of electrons
What is the main advantage of ball and stick models?
What is the main advantage of ball and stick models?
Shows 3D arrangement of atoms
Why do small molecules have low melting and boiling points?
Why do small molecules have low melting and boiling points?
Weak intermolecular forces
Why do small molecules not conduct electricity?
Why do small molecules not conduct electricity?
No overall electric charge
What is the usual physical state of small molecules at room temperature?
What is the usual physical state of small molecules at room temperature?
Gases or liquids
What happens when iodine () melts or boils?
What happens when iodine () melts or boils?
Intermolecular forces break
Why is iodine () solid but fluorine () gas at room temperature?
Why is iodine () solid but fluorine () gas at room temperature?
Iodine has stronger intermolecular forces
How does molecular size affect intermolecular forces in small molecules?
How does molecular size affect intermolecular forces in small molecules?
Bigger molecules have stronger forces