The starter and exit quiz of the lesson “Using models to explain state changes”, from the unit “Chemistry of carbon” (Year 10 Science) by Oak National Academy.
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Oak National Academy
12 questions
Below, there are six different models for representing the bonding and structure in the compound ethane. Match the image to the correct type of model.
What do the dots and crosses typically represent in dot-and-cross diagrams?
Which of the following are limitations of the empirical formula when representing molecules?
Which model would not be appropriate to represent the bonding and/or structure in metals?
What advantage does the ball-and-stick model have over the space-filling model?
Which representation is most suitable for illustrating the arrangement of ions in a giant ionic lattice?
Which properties of diamond are explained by the fact that each carbon atom is strongly bonded to four other carbon atoms in a rigid structure?
What type of forces hold simple molecules together?
One model of graphite shows it having free moving, delocalised electrons. This means graphite is an electrical ___?
Match each substance to the correct statement about it's structure and/or properties.
Match the key words to their definitions.
[a] covalent substances have [b] melting points as they're held together by strong covalent bonds. [c] covalent substances have [d] melting points as there are weak forces between molecules.
