Questions and Answers
What is matter and what are its three states?
Matter is anything that occupies space and has mass. Its three states are solid, liquid, and gas.
Describe the arrangement of molecules in solids and how it affects their characteristics.
In solids, molecules are packed tightly together, which gives them a definite shape, fixed volume, and makes them rigid and incompressible.
How do liquids differ from solids in terms of shape and volume?
Liquids do not have a definite shape and take the shape of their container, but they have a fixed volume.
What are molecules and how do they relate to atoms?
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Give examples of two solids and two liquids.
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What is meant by the term 'volume' in relation to solids?
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Explain why solids cannot flow.
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How do the forces of attraction between molecules in liquids compare to those in solids?
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Study Notes
Matter
- Anything that occupies space and has mass is called matter
- All living and non-living things are made of matter
- Matter exists in three states: Solid, Liquid, and Gas
States of Matter
- Solids: tightly packed molecules with strong forces of attraction
- Have a definite shape and size
- Have a fixed volume
- Occupy space
- Cannot flow
- Little to no space between molecules, making them compact and hard to compress
- Liquids: molecules with empty spaces between them, allowing for free movement
- Take the shape of the container
- Have a fixed volume
- Occupy space
- Force of attraction between molecules is weaker than solids
- Can flow
- Can be compressed to a lesser extent than solids
- Gases: not mentioned in detail, but oxygen and carbon dioxide are examples
Molecules and Atoms
- Matter is made up of tiny particles called molecules
- Molecules are the smallest unit of matter with all the properties of that particular matter
- Molecules can be broken down into atoms
- Atoms are the smallest unit of matter
- Example: oxygen gas (O2) is a molecule made up of two oxygen atoms
Examples
Solids
- wood
- pencil
- rubber
- iron
- table
- chair
Liquids
- water
- milk
- juice
- oil
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Description
Learn about the definition of matter and its three states: solid, liquid, and gas. Understand the characteristics of each state, including their properties and behaviors.