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Modules C4 - Multiple choice revision 1. Which one of the following pairs atoms is most likely to form an ionic bond? A. Na and F C. N and F B. O and F D. C and F 2. Aluminium is in Group III. The oxide ion has the formula O2-. Aluminium oxide will have the formula... A. AlO C. Al2O3 B. AlO2 D. Al3O2 3. Which of the following statements about sodium chloride is incorrect? A. it has a high melting point C. it is soluble in water B. it conducts electricity at room D. it is brittle temperature 4. The structure normally associated with ionic bonding is... A. a giant lattice B. a simple molecule C. a giant molecule D. a regular arrangement of ions surrounded by a sea, or cloud, of electrons 5. Which of the following does not have a giant structure? A. Diamond C. Iodine B. Graphite D. Silicon dioxide 6. Which statement about atomic structure is incorrect? A. The proton (atomic) number gives the number of protons in an atom or ion B. For an element the number of electrons is the same as the number of protons C. The number of protons is different in an isotope of an element D. The number of neutrons can be worked out by subtracting the atomic number from the mass number 7. Which statement about the Halogens is incorrect? A. They exist as diatomic molecules like Cl2 B. They have 7 electrons in the outer shell 8. Which statement about sodium is incorrect? A. It burns with a purple flame B. It reacts with water to form an alkaline hydroxide C. The reactivity decreases down the group D. They form positive ions in reactions C. It forms positive ions D. It is a soft metal 9. Which of the following statements best explains why silicon dioxide has a high melting point? A. It has a giant ionic structure with strong electrostatic attraction between ions B. It has a giant covalent structure with strong covalent bonds between atoms C. It has a simple molecular structure with weak forces between molecules D. It has a giant metallic structure with a strong attraction between positive ions and the sea of electrons 10. Which of the following is not a property of ionic compounds? A. Conduct electricity in solid form B. High melting point C. Regular crystal arrangement D. Highly soluble in water 11. Which of the following is the electron arrangement of an element in group I? A. 2,8 B. 2,8,1 C. 2 D. 2,8,8 12. Which of the following is the electron arrangement of an ion of a group I metal? A. 2,8 B. 2,8,1 C. 2,8,2 D. 2,8,3 13. Which of the following gives the best explanation for the fact that sodium chloride has a regular crystal arrangement? A. It contains ionic bonds which are very strong B. It contains a regular 3D arrangement of positive and negative ions C. It contains ions D. The ions are free to move
