Multiple Choice
Which of the following is the correct chemical formula for magnesium hydrogen carbonate?
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3. Chemical Reactions
Naming Ionic Compounds
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Which two properties are characteristic of ionic compounds?
A
They are malleable and have low boiling points.
B
They are good conductors in solid state and are insoluble in water.
C
They are soft and do not form crystalline structures.
D
They have high melting points and conduct electricity when dissolved in water.
Verified step by step guidance1
Understand the nature of ionic compounds: Ionic compounds are formed by the electrostatic attraction between positively charged cations and negatively charged anions.
Recall the physical properties of ionic compounds: They typically have high melting and boiling points due to the strong ionic bonds holding the lattice together.
Consider electrical conductivity: Ionic compounds do not conduct electricity in the solid state because ions are fixed in place, but they do conduct electricity when melted or dissolved in water because the ions are free to move.
Evaluate the options given: Properties like malleability and softness are characteristic of metallic or covalent compounds, not ionic compounds.
Conclude that the correct properties of ionic compounds are high melting points and electrical conductivity when dissolved in water, reflecting their ionic lattice structure and behavior in solution.
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