Water Properties and Changes Quiz

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Questions and Answers

Which process occurs when ice turns into water?

  • Melting (correct)
  • Freezing
  • Condensation
  • Evaporation

Water can only exist in two physical states: liquid and gas.

False (B)

What effect does increasing temperature have on the rate of evaporation?

It increases the rate of evaporation.

Water is called the universal __________ because it can dissolve many different substances.

<p>solvent</p> Signup and view all the answers

Match the terms with their definitions:

<p>Evaporation = Process where liquid turns to vapor Condensation = Process where vapor turns to liquid Freezing = Process where liquid turns to solid Dissolving = Process where a solute mixes in a solvent</p> Signup and view all the answers

What does solubility refer to?

<p>The limited amount of solute that can dissolve in a given amount of solvent (B)</p> Signup and view all the answers

What is the change in state from a gas to a liquid called?

<p>Condensation (C)</p> Signup and view all the answers

The solubility of a substance in water remains constant regardless of temperature changes.

<p>False (B)</p> Signup and view all the answers

The temperature of water changes during the process of condensation.

<p>False (B)</p> Signup and view all the answers

What factors can affect the solubility of a substance in water?

<p>Temperature</p> Signup and view all the answers

Different substances have different __________ in water.

<p>solubilities</p> Signup and view all the answers

What happens to energy when water vapor condenses?

<p>Energy is released to the surroundings.</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Solute = The substance that is dissolved Solvent = The substance in which the solute dissolves Solubility = The ability of a substance to dissolve in a solvent Temperature = A measure that affects solubility</p> Signup and view all the answers

When ice is melting, energy is __________ from the surroundings.

<p>absorbed</p> Signup and view all the answers

Match the following processes with their corresponding changes:

<p>Boiling = Liquid to gas Condensation = Gas to liquid Evaporation = Liquid to gas Freezing = Liquid to solid</p> Signup and view all the answers

Which process in the water cycle involves water vapor cooling and forming droplets?

<p>Condensation (A)</p> Signup and view all the answers

Higher humidity decreases the rate of evaporation.

<p>True (A)</p> Signup and view all the answers

What is the process called that describes the continuous movement of water between liquid and vapor forms?

<p>water cycle</p> Signup and view all the answers

When water droplets in clouds become heavy enough, they fall as __________.

<p>rain</p> Signup and view all the answers

Match the factors influencing the rate of evaporation with their respective effects:

<p>Surface Area = Higher Humidity = Lower Temperature = Higher Air Speed = Higher</p> Signup and view all the answers

What is the term for the substance that is dissolved in a liquid?

<p>Solute (A)</p> Signup and view all the answers

All substances can dissolve in water.

<p>False (B)</p> Signup and view all the answers

What is formed when a solute dissolves in a solvent?

<p>Solution</p> Signup and view all the answers

When the water is ____, the rate of dissolving is higher.

<p>stirred</p> Signup and view all the answers

What is the temperature at which ice melts?

<p>0°C (B)</p> Signup and view all the answers

Water vapor is visible to the naked eye.

<p>False (B)</p> Signup and view all the answers

What happens to water at 100°C?

<p>It boils and turns into water vapor.</p> Signup and view all the answers

Match the change in state with its description:

<p>Melting = Change from solid to liquid Freezing = Change from liquid to solid Boiling = Change from liquid to gas Evaporation = Change from liquid to gas at temperatures below boiling point</p> Signup and view all the answers

A saturated solution contains no undissolved solute.

<p>False (B)</p> Signup and view all the answers

How does temperature affect the solubility of most substances in water?

<p>Solubility generally increases with an increase in temperature.</p> Signup and view all the answers

A solution is considered saturated when it can no longer dissolve any more ______.

<p>solute</p> Signup and view all the answers

Match the following substances with their solubility characteristics:

<p>Salt = Highly soluble in water Sugar = Highly soluble in water Oil = Low solubility in water Sand = Practically insoluble in water</p> Signup and view all the answers

Flashcards

Evaporation

The process where liquid water changes into water vapor (gas) at any temperature.

Condensation

The process where water vapor (gas) in the air cools and changes back into liquid water, forming clouds.

Water Cycle

The continuous movement of water on, above and below the surface of the Earth.

Solute

A substance that dissolves in a solvent. For example, sugar is a solute in water.

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Solvent

The substance that dissolves a solute to form a solution. For example, water is a solvent for sugar.

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Solid State of Water (Ice)

The state of matter where water molecules are tightly packed and have a fixed shape and volume.

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Liquid State of Water

The state of matter where water molecules are more loosely packed and can flow, taking the shape of their container. It has a fixed volume.

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Gaseous State of Water (Water Vapor)

The state of matter where water molecules are very far apart and move freely. It does not have a fixed shape or volume.

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Melting

The process where a solid (ice) changes into a liquid (water) when heated to 0°C.

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Freezing

The process where a liquid (water) changes into a solid (ice) when cooled to 0°C.

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Solubility

The maximum amount of a substance (solute) that can dissolve in a specific amount of liquid (solvent) at a given temperature.

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Temperature's Impact on Solubility

The relationship between the temperature and the amount of solute that can dissolve in a solvent.

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Variations in Solubility

Different materials have different abilities to dissolve in water.

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What is condensation?

Condensation is the change of state from a gas to a liquid. When steam or water vapor cools to or below its boiling point, it condenses and changes into water.

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Does temperature change when water changes state?

When water changes from one state to another, its temperature remains constant.

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What happens to energy during melting and boiling?

Energy is absorbed from the surroundings when a substance changes from a solid to a liquid (melting) or from a liquid to a gas (boiling/evaporation).

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What happens to energy during condensation and freezing?

Energy is released to the surroundings when a substance changes from a gas to a liquid (condensation) or from a liquid to a solid (freezing).

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What is evaporation?

Evaporation is the change of state from a liquid to a gas. When water reaches its boiling point or is exposed to enough heat energy, it evaporates and changes into water vapor.

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Transportation

The movement of clouds across the sky, driven by wind.

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Precipitation

The release of water from clouds as rain, snow, sleet, or hail. This occurs when water droplets in clouds become too heavy.

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Rate of Evaporation

The rate at which evaporation happens, influenced by factors like the size of the water surface, the humidity in the air, the air temperature, and the wind speed.

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What is a solute?

The substance that is dissolved in a liquid to form a solution.

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What is a solvent?

The liquid that dissolves the solute to form a solution.

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What is a solution?

A homogeneous mixture formed when a solute dissolves in a solvent.

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What does soluble mean?

A substance that readily dissolves in a given solvent, like sugar in water.

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What does insoluble mean?

A substance that does not dissolve in a given solvent, like oil in water.

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Why do some substances dissolve more than others?

Different substances have different abilities to dissolve in water.

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How does temperature affect solubility?

The amount of a substance that can dissolve in water can change with temperature.

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Saturated solution

A solution where no more solute can dissolve, with some undissolved solute remaining at the bottom.

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What happens when we keep adding solute to a solution?

Adding more solute continues to dissolve until the solution reaches a point where no more can be dissolved.

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