<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />

# Solid, Liquid, and Gas

## Characteristics associated with three different states of matter

Estimated2 minsto complete
%
Progress
Practice Solid, Liquid, and Gas

MEMORY METER
This indicates how strong in your memory this concept is
Progress
Estimated2 minsto complete
%
Solid, Liquid, and Gas

Credit: Iceberg: Courtesy of Rear Admiral Harley D. Nygren, NOAA; Beach: User:Wicki/Wikimedia Commons; Volcano: Courtesy of E. Klett, US Fish and Wildlife Service
Source: Iceberg: http://commons.wikimedia.org/wiki/File:Ice_berg.jpg; Beach: http://commons.wikimedia.org/wiki/File:Ocean_Spokojny.JPG; Volcano: http://commons.wikimedia.org/wiki/File:Dds40-097_large.jpeg

Why is the state of water different in each picture?

Water can take many forms. At low temperatures (below 0°C), it is a solid. When at “normal” temperatures (between 0°C and 100°C), it is a liquid. While at temperatures above 100°C, water is a gas (steam).

The state the water is in depends upon the temperature.  Each state (solid, liquid, and gas) has its own unique set of physical properties.

### Matter and Its States

Matter typically exists in one of three states: solid, liquid, or gas. The state a given substance exhibits is also a physical property. Some substances exist as gases at room temperature (oxygen and carbon dioxide), while others, like water and mercury metal, exist as liquids. Most metals exist as solids at room temperature. All substances can exist in any of these three states.

#### Liquid

Liquids have the following characteristics:

• no definite shape (takes the shape of its container)
• has definite volume
• particles are free to move over each other, but are still attracted to each other
• the volum of the liquid does not change.

#### Gas

Gases have the following characteristics:

• no definite shape (takes the shape of its container)
• no definite volume
• particles move in random motion with little or no attraction to each other
• highly compressible

#### Solid

Solids are defined by the following characteristics:

• definite shape (rigid)
• definite volume
• particles vibrate around fixed axes
See this video and say what the man is talking about.

#### Summary

• Three states of matter exist – solid, liquid, and gas.
• Solids have a definite shape and volume.
• Liquids have a definite volume, but take the shape of the container.
• Gases have no definite shape or volume.

#### Practice

Use the web site to answer the following questions:

1. Which material is a gas at room temperature (25°C)?
2. Which material is a solid at room temperature?
3. Which material is a liquid at room temperature?
4. What happens to the motion of the particles as you increase the temperature?
5. What happens to the motion of the particles as you decrease the temperature?

#### Review

1. How many states of matter are there?
2. What is a solid?
3. What is a liquid?
4. What is a gas?

### Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes