Properties of Water
- Universal Solvent: Water is known as the universal solvent because it has the ability to dissolve a wide variety of solutes due to its polar nature.
- High Surface Tension: Water molecules are attracted to each other, creating a "skin" on the surface of the water.
- High Specific Heat: Water can absorb a lot of heat before its temperature rises, making it important for regulating the Earth's temperature.
- Expansion Upon Freezing: Unlike most substances, water expands when it freezes, which is why ice floats on water.
- High Heat of Vaporization: Water requires a large amount of energy to change from a liquid to a gas, which is why sweating helps cool the body.
Importance of Water
Water is crucial for all forms of life. It is used for drinking, cooking, agriculture, industrial processes, and sanitation. Additionally, water plays a vital role in shaping the Earth's surface through erosion and weathering.
Study Guide
- What is the chemical formula of water?
- What are the three states of water?
- Why is water known as the universal solvent?
- Why does ice float on water?
- How does water regulate the Earth's temperature?
The chemical formula of water is H2O.
The three states of water are solid (ice), liquid (water), and gas (water vapor).
Water is known as the universal solvent because it has the ability to dissolve a wide variety of solutes due to its polar nature.
Ice floats on water because it is less dense than liquid water, due to the unique expansion of water upon freezing.
Water has a high specific heat, meaning it can absorb a lot of heat before its temperature rises. This property helps regulate the Earth's temperature.
[Water] Related Worksheets and Study Guides:
.◂Science Worksheets and Study Guides Third Grade. Relationships among living things
Study Guide
Relationships among living things 
Activity Lesson
Relationships Among Living Things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
From Molecules to Organisms: Structures and Processes
Create representations to explain the unique and diverse life cycles of organisms other than humans (e.g., flowering plants, frogs, butterflies), including commonalities such as birth, growth, reproduction, and death.
Unity and Diversity
Construct an argument from evidence to explain the likelihood of an organism’s ability to survive when compared to the resources in a certain habitat (e.g., freshwater organisms survive well, less well, or not at all in saltwater; desert organisms survive well, less well, or not at all in woodlands).
Create models that illustrate how organisms and their habitats make up a system in which the parts depend on each other.