States of Matter Flashcards
What are the Three States of Matter
Solid, liquid , gas
The state that you get depends on what?
How strong the forces of attraction are between the particles of the material
What 3 things does the strength of the force rely on?
- material
- temperature
- pressure
Describe the structure of solid particles
- There are strong forces of attraction between the particles, which holds the vibrating particles close together in fixed positions to form a regular lattice structure
Why do solids keep a definite shape and volume?
The particles are in fixed positions and tightly packed
What happens to the particles when the solid is heated?
The particles vibrate more(causing solids to expand slightly) as the have more energy
Describe the structure of liquid particles
- weak forces of attraction between particles
- randomly arranged and take the shape of their container are free to move around each other, but are close together
Can liquids be compressed?
No, they have a definite volume
- their particles are close together and have no space to move into.
Do liquids have a definite shape
No
- weak inter-molecular forces between the molecules in a liquid is less when compared to solids
- liquid molecules are loosely packed
Describe the structure of gas particles
- very weak intermolecular forces - free to move far apart
- particles travel in straight lines
- move constantly in random motions
Can gasses be compressed
- Particles of gas have huge intermolecular spaces in the midst of them. By the exertion of pressure, space can be diminished and the particles are brought closer
Do gases have a fixed shape?
No,
- weak intermolecular force of attraction, the gaseous particles have enough kinetic energy and they can move in any direction without any restrictions
What happens to the gas particles when heated?
- particles move faster
- more collisions
- expands / pressure increases more particles colliding with walls of container
What is the process called when solid turns to gas
Subliming
