Liquid

A liquid is one of the three classical states of matter (the others being solid and gas). It has a definite volume, but no definite shape. Unlike gases, liquids do not expand to fill any container in which they are placed, and they have a definite volume at a given temperature and pressure.

Properties of Liquids:

• Definite Volume: Liquids have a fixed volume that does not change with the shape of the container.
• No Definite Shape: Liquids take the shape of the container they are in.
• Fluidity: Liquids can flow and take the shape of the container.
• Incompressibility: Liquids are difficult to compress.
• Surface Tension: Liquids have a thin "skin" on their surface due to intermolecular forces.

Examples of Liquids:

Some common examples of liquids include water, milk, juice, oil, and vinegar.

Changes in State:

Liquids can change state to become a solid through a process called freezing, and they can change to a gas through a process called evaporation or boiling. The temperature at which a liquid changes to a gas is called its boiling point, and the temperature at which it changes to a solid is called its freezing point.

Study Guide:

Here are some key points to remember about liquids:

1. What are the three classical states of matter?
2. What is the defining characteristic of a liquid?
3. Give an example of a liquid.
4. Describe the concept of surface tension in liquids.
5. What is the process called when a liquid changes to a gas?
6. What is the temperature at which a liquid changes to a gas called?
7. What is the temperature at which a liquid changes to a solid called?

Understanding the properties and behavior of liquids is important in the study of science and everyday life. Remember to observe and experiment with liquids to gain a deeper understanding of their characteristics.

[Liquid] Related Worksheets and Study Guides:

• Solids, liquids and gasesScience • Sixth Grade
• Liquid MeasureMathematics • Kindergarten
• Science worksheets: Solids, liquids and gases.Science • Fifth Grade