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Chemistry: Solutions and Mixtures

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Questions and Answers

What is a solution?

A combination of two or more substances that are not mixed
A mixture of two or more substances that are not evenly distributed
A single pure substance
A mixture of two or more substances that are evenly distributed (correct)

Which of the following statements about solutes and solvents is correct?

The solute is always present in a greater amount than the solvent
There must be equal amounts of solute and solvent
There can be multiple solvents but only one solute
There can be multiple solutes but only one solvent (correct)

What is the effect of increasing temperature on the solubility of a solid solute in a liquid solvent?

The solubility remains the same
The solubility increases (correct)
The solubility decreases
The effect depends on the specific solute and solvent

How does increasing pressure affect the solubility of gases in water?

It increases the solubility (C) Signup and view all the answers

What is the maximum amount of solute that can dissolve in a given amount of solvent called?

Solubility (B) Signup and view all the answers

Which of the following factors can affect the solubility of a solute?

All of the above (D) Signup and view all the answers

Why does carbon dioxide gas remain dissolved in a closed beverage bottle?

The high pressure inside the bottle prevents the gas from escaping. (A) Signup and view all the answers

What happens when a carbonated beverage bottle is opened?

The gas solubility decreases, causing the carbon dioxide gas to bubble off the liquid. (A) Signup and view all the answers

How can the rate of dissolution of a solid solute be increased?

By increasing the surface area of the solute exposed to the solvent. (A) Signup and view all the answers

Why does powdered coffee dissolve faster than granulated coffee, even without stirring?

Powdered coffee has a larger surface area exposed to the solvent. (A) Signup and view all the answers

How does stirring a mixture affect the rate of dissolution of a solute?

Stirring brings fresh solvent into contact with the solute, increasing the rate of dissolution. (D) Signup and view all the answers

What is the relationship between the surface area of a solute and its rate of dissolution?

Larger surface area leads to faster dissolution. (B) Signup and view all the answers