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10 minutes maximum!
An IB Periodic Table is required. |
1. Which statement is true for the formation of an ionic bond?
- A. Metal atoms share electrons with non-metal atoms
- B. Metal atoms transfer electrons to non-metal atoms
- C. Non-metal atoms share electrons with non-metal atoms
- D. Non-metal atoms transfer electrons to metal atoms
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2. What is the correct formula for calcium nitrate?
- A. Ca3N2
- B. Ca2N3
- C. CaNO3
- D. Ca(NO3)2
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3. Which statement about positive ions is NOT correct?
- A. They are smaller than their parent atom
- B. They are also known a cations
- C. They are isoelectronic with the nearest noble gas
- D. They are formed when metal atoms gain electrons
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4. Which statement about sodium chloride is NOT correct?
- A. It is soluble in water
- B. It has a high melting point
- C. it is a volatile solid
- D. It conducts electricity when molten
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5. Which type of structure is formed by an ionic compound?
- A. A giant lattice
- B. A simple molecule
- C. A giant molecule
- D. A lattice of positive ions and delocalized electrons
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6. Select the diagram which correctly shows the valence electrons in magnesium fluoride.
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7. An ionic bond is the electrostatic attraction between ...
- A. positive ions and delocalized electrons
- B. a shared pair of electrons and the positively charged nuclei
- C. polar molecules
- D. oppositely charged ions
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8. Which row lists the correct formulae for sodium phosphate and sodium sulfate?
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Sodium phosphate |
Sodium sulfate |
| A |
Na3PO4 |
Na2SO4 |
| B |
Na3PO4 |
Na2S |
| C |
Na2PO4 |
Na2SO4 |
| D |
Na2PO4 |
Na2S |
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9. Which statement is NOT true for the formation of potassium oxide?
- A. K+ cations with electronic configuration 2,8,8 are formed
- B. O- anions with electronic configuration 2,8 are formed
- C. Potassium oxide is a solid with a high melting point
- D. The formula of the compound formed is K2O
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10, Aqueous ionic substances conduct electricity because they have ...
- A. mobile electrons
- B. atoms which are free to move
- C. ions which are free to move
- D. ions arranged in a regular lattice
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