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Chemistry: Dissolving Compounds

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Questions and Answers

What is the process by which ions are surrounded by water molecules called?

Ionization

Evaporation

Dissociation

Hydration (correct)

Which of the following correctly describes the term 'dissociation'?

The formation of a solid from a solution

The separation of individual ions from an ionic compound (correct)

The mixing of two liquids to form a solution

The reorientation of water molecules

Which statement is true about miscibility?

All ionic compounds are miscible in water

Miscible compounds cannot be liquids

Miscible compounds are all ionic in nature

Miscible compounds can form a solution (correct)

How does the force of attraction between water molecules and ions compare to ionic bonds?

Stronger than ionic bonds Signup and view all the answers

Which of the following is an example of an immiscible mixture?

Oil and water Signup and view all the answers

What does the expression 'likes dissolve likes' imply?

Similar types of substances are more likely to dissolve in each other. Signup and view all the answers

In the dissolving process, what must the solvent do regarding the solute?

It must spread apart to make space for the solute particles. Signup and view all the answers

Typically, which of the following statements is accurate about polar solvents?

They are usually solvable with polar solutes. Signup and view all the answers

Which of the following correctly describes non-polar solvents?

They are usually solvable with non-polar solutes. Signup and view all the answers

What happens to solute particles when they are dissolved in a solvent?

They are surrounded and interact with solvent particles. Signup and view all the answers

Study Notes

Dissolving Ionic Compounds

Water molecules reorient themselves around ions, creating stronger attractions than the ionic bonds holding the ions together.
Hydration is the process of surrounding ions with water molecules.
Dissociation is the separation of individual ions from an ionic compound as it dissolves in water.
Example: NaCl(s) → Na+(aq) + Cl−(aq)

Dissolving Molecular Compounds

Miscible: substances that mix to form a solution (e.g., glucose and water).
Immiscible: substances that do not mix to form a solution (e.g., oil and water).

"Likes Dissolve Likes" Principle

Polar solutes dissolve in polar solvents.
Nonpolar solutes dissolve in nonpolar solvents.

Dissolving Process

The solvent makes space for the solute, causing them to separate.
Forces of attraction between solute and solvent particles cause them to move closer together.

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Description

Explore the concepts of dissolving ionic and molecular compounds in this quiz. Understand hydration, dissociation, and the 'likes dissolve likes' principle. Test your knowledge on how solvents interact with different solutes.