# Solutions And Mixtures Trivia Questions

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This is a quiz over how well you know 9th grade physical science containing solutions and mixtures.

• 1.

### The oceans are an example of a(n)______solution.

• A.

Gaseous

• B.

Liquid

• C.

Solid

• D.

Anhydrous

B. Liquid
Explanation
The oceans are an example of a liquid solution because they consist of a mixture of water and various dissolved substances, such as salts and gases. In a liquid solution, the solute (dissolved substances) is evenly distributed throughout the solvent (water), creating a homogeneous mixture. The oceans contain a vast amount of water that is constantly in motion, allowing for the mixing and distribution of dissolved substances.

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• 2.

### In a solution, the substance which is being dissolved is the_____.

• A.

Solvent

• B.

Solute

• C.

Liquid

• D.

Gas

B. Solute
Explanation
In a solution, the substance that is being dissolved is called the solute. The solute is the component that is present in a smaller quantity and is dissolved into the solvent. The solvent, on the other hand, is the component that is present in a larger quantity and is responsible for dissolving the solute. Therefore, in this case, the solute refers to the substance that is being dissolved in the solution.

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• 3.

### A solution that contains all the solute it can hold at a given temperature is _____.

• A.

Supersaturated

• B.

Dilute

• C.

Saturated

• D.

Unsaturated

C. Saturated
Explanation
A solution that contains all the solute it can hold at a given temperature is considered saturated. This means that the solution has reached its maximum capacity to dissolve the solute, and any additional solute added will not dissolve. The concentration of the solute in a saturated solution is at its highest possible level for that temperature.

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• 4.

### The solute that is found in the greatest amount in ocean water is______.

• A.

H20

• B.

KCl

• C.

NaCl

• D.

CuSO4

C. NaCl
Explanation
NaCl, or sodium chloride, is the correct answer because it is the most abundant solute found in ocean water. This is due to the fact that sodium and chloride ions are highly soluble in water and are present in large quantities in the Earth's oceans.

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• 5.

### A substance that does not conduct an electric current when it forms a solution is_____.

• A.

A polar substance

• B.

A nonpolar substance

• C.

A nonelectrolyte

• D.

An electrolyte

C. A nonelectrolyte
Explanation
A nonelectrolyte is a substance that does not conduct an electric current when it forms a solution. This is because nonelectrolytes do not dissociate into ions in solution, meaning they do not produce charged particles that can carry an electric current. In contrast, electrolytes do dissociate into ions in solution and can conduct electricity. Therefore, a substance that does not conduct an electric current when it forms a solution is a nonelectrolyte.

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• 6.

### When a gas is dissolved in a liquid, the gas dissolves faster if the liquid is ____.

• A.

Heated

• B.

Cooled

• C.

An electrolyte

• D.

Under low pressure

B. Cooled
Explanation
When a gas is dissolved in a liquid, the gas molecules have more kinetic energy and move faster. Cooling the liquid reduces the kinetic energy of the gas molecules, causing them to slow down and come closer together. This allows the gas to dissolve faster in the liquid because the slower-moving gas molecules have a better chance of being captured and trapped by the liquid molecules. Therefore, cooling the liquid promotes faster dissolution of the gas.

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• 7.

### Increasing the surface area of a solid _____.

• A.

Causes the solid to ionize

• B.

Slows the rate of solution

• C.

Speeds the rate of solution

• D.

Has no effect on the rate of solution

C. Speeds the rate of solution
Explanation
Increasing the surface area of a solid speeds up the rate of solution. This is because when the surface area is increased, there is more area available for the solvent molecules to come into contact with the solid particles. This increases the frequency of collisions between the solvent and the solid, leading to a faster dissolution process. Therefore, increasing the surface area of a solid enhances the rate at which it dissolves in a solvent.

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• 8.

### The process in which fresh water is obtained from ocean water that has been evaporated and condensed is called ____.

• A.

Ionization

• B.

Dissociation

• C.

Distillation

• D.

The freeze method

C. Distillation
Explanation
Distillation is the correct answer because it is the process of obtaining fresh water from ocean water that has been evaporated and condensed. During distillation, the saltwater is heated, causing the water to evaporate and leave the salt behind. The vapor is then condensed and collected as fresh water. Ionization and dissociation are not relevant to this process, and the freeze method is not mentioned as a method of obtaining fresh water from ocean water.

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• 9.

### The concentration of a solution that contains much solute in the solvent could be described as _____.

• A.

Polar

• B.

Concentrated

• C.

Unsaturated

• D.

Dilute

B. Concentrated
Explanation
The concentration of a solution that contains much solute in the solvent could be described as "concentrated." This means that there is a large amount of solute present relative to the amount of solvent. A concentrated solution has a high solute-to-solvent ratio, resulting in a strong or intense solution.

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• 10.

### An alloy is an example of a _____.

• A.

Gaseous solution

• B.

Liquid solution

• C.

Dilute solution

• D.

Solid solution

D. Solid solution
Explanation
An alloy is a solid solution because it is a mixture of two or more metals. In an alloy, the atoms of different metals are evenly distributed throughout the solid, forming a homogeneous mixture. This results in a material with unique properties that are different from the individual metals. Examples of alloys include bronze (copper and tin), steel (iron and carbon), and brass (copper and zinc).

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• 11.

### Adding more solute to a solvent _____.

• A.

Decreases its boiling point

• B.

Increases its freezing point

• C.

Increases its boiling point

• D.

Does not affect its boiling point

C. Increases its boiling point
Explanation
When more solute is added to a solvent, it increases the boiling point of the solvent. This is because the solute particles disrupt the intermolecular forces between the solvent molecules, making it more difficult for the solvent molecules to escape into the gas phase. As a result, the boiling point of the solvent increases, requiring higher temperatures for it to boil.

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• 12.

### When placed in water, some covalent compounds _____.

• A.

Ionize

• B.

• C.

Form protons

• D.

Dissociate

A. Ionize
Explanation
When placed in water, some covalent compounds ionize. This means that they break apart into ions, which are charged particles. This process occurs because water molecules are polar, meaning they have a positive and negative end. The positive end of water attracts the negative ions in the covalent compound, while the negative end attracts the positive ions. As a result, the covalent compound dissociates into ions, allowing it to conduct electricity in water.

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• 13.

### Which of the following will speed up the dissolving of a solid solute in water?

• A.

Cool the solution

• B.

Stir the solution

• C.

Grind up the solvent

• D.

Freeze the solute

B. Stir the solution
Explanation
Stirring the solution will speed up the dissolving of a solid solute in water because it increases the contact between the solute particles and the solvent molecules. This increased contact allows for a faster and more efficient mixing of the solute particles into the solvent, leading to a quicker dissolving process. Cooling the solution, grinding up the solute, and freezing the solute may have some effects on the dissolving process but they will not speed it up as effectively as stirring the solution.

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• 14.

### Which of the following combinations would increase the solubility of a gas in a liquid?

• A.

Decrease the pressure and decrease the temperature

• B.

Decrease the pressure and increase the temperature

• C.

Increase the pressure and decrease the temperature

• D.

Increase the pressure and increase the temperature

C. Increase the pressure and decrease the temperature
Explanation
When the pressure on a gas is increased, the gas molecules are forced closer together, which increases the chances of them coming into contact with the liquid and dissolving. On the other hand, when the temperature is decreased, the kinetic energy of the gas molecules decreases, causing them to slow down and move closer to each other. This also increases the chances of the gas molecules dissolving in the liquid. Therefore, increasing the pressure and decreasing the temperature both contribute to increasing the solubility of a gas in a liquid.

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• 15.

### Solutions of electrolytes and metals are ____.

• A.

Insulators

• B.

Conductors

• C.

Polar

• D.

Negative

B. Conductors
Explanation
Solutions of electrolytes and metals are conductors because they allow the flow of electric current. Electrolytes are substances that dissociate into ions in solution, enabling the movement of charged particles. Metals, on the other hand, have a sea of delocalized electrons that can freely move within the structure. Both electrolytes and metals have the ability to conduct electricity due to the presence of mobile charged particles.

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• 16.

### The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its _____.

• A.

Concentration

• B.

Density

• C.

Dilution

• D.

Solubility

D. Solubility
Explanation
Solubility refers to the maximum amount of solute that can be dissolved in a specific amount of solvent at a given temperature. It is a measure of how well a solute can dissolve in a particular solvent. Concentration, on the other hand, refers to the amount of solute present in a given amount of solvent or solution. Density is a measure of mass per unit volume. Dilution refers to the process of reducing the concentration of a solute in a solution by adding more solvent. Therefore, solubility is the most appropriate term to describe the given explanation.

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• 17.

### A molecule that is positively charged on one end and negatively charged on the other end is ____.

• A.

Polar

• B.

Magnetic

• C.

Nonpolar

• D.

A. Polar
Explanation
A molecule that is positively charged on one end and negatively charged on the other end is polar. This is because the positive and negative charges are not evenly distributed throughout the molecule, causing an imbalance of charge. This creates a dipole moment, resulting in a molecule that has a positive end and a negative end.

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• 18.

### __________ means that a substance is physically combined and can be separated into different parts.

heterogeneous, heterogenous, heterogeneous mixture
Explanation
The term "heterogeneous" refers to a substance that is physically combined and can be separated into different parts. This means that the substance is composed of different components that are visibly distinct from one another. It can be separated through methods such as filtration or picking out the different parts. The terms "heterogenous" and "heterogeneous mixture" also convey the same meaning, indicating that the substance is a mixture with visibly different components that can be separated.

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• 19.

### __________ means that a substance is chemically combined and can not be separated.

homogeneous mixture, homogeneous, homogenous
Explanation
Homogeneous mixture refers to a substance that is chemically combined and cannot be separated. It is a uniform combination of two or more substances, where the components are evenly distributed throughout the mixture. This means that there are no visible boundaries or differences in composition within the mixture. The terms homogeneous and homogenous are both correct ways to describe this type of mixture.

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• 20.

### The ______ is the substance being dissolved.

solute
Explanation
The solute is the substance that is being dissolved in a solution. In a solution, the solute is the component that is present in a smaller amount and is dissolved by the solvent. It can be a solid, liquid, or gas that is dispersed evenly throughout the solvent. The solute particles are typically smaller than the solvent particles and they interact with the solvent molecules to form a homogeneous mixture.

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• 21.

### The _____ is what you're dissolving something in.

solvent
Explanation
The term "solvent" refers to the substance in which another substance, known as the solute, is dissolved. In other words, it is the medium or liquid that allows for the dissolution of another substance. Without a solvent, the process of dissolving would not occur. Therefore, the correct answer for this question is "solvent."

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• 22.

### ________ means there is a very small amount of solute.

dilute
Explanation
Dilute refers to a solution that contains a small amount of solute in a larger amount of solvent. It implies that the concentration of the solute is low and the solution is weak. This can be achieved by adding more solvent to the solution or by reducing the amount of solute. Dilute solutions are often used in various scientific experiments and in everyday applications, such as diluting cleaning agents or medications.

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• 23.

### _____ means that the solvent can dissolve more and has NOT reached its limit.

unsaturated
Explanation
Unsaturated means that the solvent can dissolve more and has not reached its limit. This term is used to describe a solution in which the solvent has the capacity to dissolve additional solute. In other words, the solution is not saturated, and more solute can be added to it.

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• 24.

### _____ means that the solvent contains more solute than needed; extra solute precipitates out.

supersaturated
Explanation
Supersaturated refers to a solution in which the solvent holds more solute than it can normally dissolve at a given temperature. In this state, the solution is unstable, and any slight disturbance can cause the excess solute to precipitate out. Therefore, supersaturated accurately describes a situation where the solvent contains more solute than needed, resulting in the precipitation of the extra solute.

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• 25.

### ____ means the solution has reached its limit on containing solute.

saturated
Explanation
Saturated means the solution has reached its limit on containing solute. In a saturated solution, the solvent has dissolved the maximum amount of solute it can hold at a given temperature and pressure. Any additional solute added will not dissolve and will remain as solid at the bottom of the container.

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• 26.

### ____ means that there is a large amound of solute.

concentrated
Explanation
Concentrated means that there is a large amount of solute. In a concentrated solution, the ratio of solute to solvent is high, indicating that there is a high concentration of solute particles in the solution. This means that the solution is strong or dense with solute molecules or ions.

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