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Questions and Answers
What type of elements typically form ionic compounds?
What type of elements typically form ionic compounds?
- A metal and a nonmetal (correct)
- Noble gases only
- Two metals
- Two nonmetals
Which of the following describes a cation?
Which of the following describes a cation?
- An atom that has gained a neutron
- A positively charged ion formed by losing electrons (correct)
- A neutral atom with an equal number of protons and electrons
- A negatively charged ion formed by gaining electrons
What is the primary structure of an ionic compound?
What is the primary structure of an ionic compound?
- Linear chains of covalently bonded molecules
- A liquid with free-flowing ions
- A mixture of separate individual atoms
- A crystal lattice composed of alternating cations and anions (correct)
Which property is NOT typically associated with ionic compounds?
Which property is NOT typically associated with ionic compounds?
What is responsible for the high melting and boiling points of ionic compounds?
What is responsible for the high melting and boiling points of ionic compounds?
Flashcards
Ionic Compound
Ionic Compound
A compound formed between a metal and a nonmetal or a polyatomic ion.
Cations and Anions
Cations and Anions
Cations are positively charged ions; anions are negatively charged ions.
Crystal Lattice Structure
Crystal Lattice Structure
A 3D arrangement of ions in an ionic compound, affecting its properties.
Properties of Ionic Compounds
Properties of Ionic Compounds
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Lattice Energy
Lattice Energy
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Study Notes
Ionic Compounds
- An ionic compound is formed when a metal reacts with a nonmetal or a polyatomic ion.
- An ion is formed when an atom gains or loses electrons.
- Cations are positively charged ions (formed by losing electrons).
- Anions are negatively charged ions (formed by gaining electrons).
- An ionic compound is formed by the electrostatic attraction between cations and anions.
- Ionic compounds have a crystal lattice structure.
- Lattice energy is the energy required to separate one mole of a solid ionic compound into its gaseous ions. A higher lattice energy indicates a stronger bond.
- Ionic compounds generally have high boiling points and melting points. They are typically solids at room temperature.
- Ionic compounds are brittle.
- They conduct electricity only when molten or dissolved in solution, not as solids.
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