Flashcards
Physical Change Unit 1.1
Flashcards do conjunto (20)
- 1Physical ChangeHamza Ahmed Year 8
- 2What is physical change?A change where no new substance is formed
- 3What are particles?The minute portion of matter
- 4What is the particle model?A simplified representation of solids, liquids and gases
- 5What are the points of the particle model?
- 6How are particles shaped in solids?The particles are packed tightly together
- 7How are particles shaped in liquids?They are packed loosely together
- 8How are particles shaped in gases?They are not stuck to each other at all and move freely
- 9Are particles able to move?Yes, they vibrate in ther positions where ever they are
- 10What happens when the particles in solid and liquids are heated?The vibrations increase which causes the substance to expand
- 11What happens when the particles in solids and liquids are cooled?The vibrations decrease which causes the substance to contract
- 12How do the particles act in gases?They move around in the container they're in and hit the walls of the container
- 13What happens when particles in gases are heated?The particles move around more frequently and hit the walls of the container with moreforce
- 14What happens when particles in gases are cooled?The particles move around less frequently and hit the walls of the container with less force
- 15What causes melting?Whe solids are heated enough that the vibrations become so energetic and they become liquids
- 16What causes freezing?Whe liquids are cooled enough that the vibrations become slow and they become a solid
- 17What causes evaporation?When a liquid is heated enough that the particles become unstuck and it becomes a gas
- 18What causes condensation?When a gas is cooled enough that the particles come together and form a liquid
- 19What is diffusion?Particles of 2 gases or 2 liquids mix without stirring
- 20How do gas particles travel during diffusion?In a zig-zag fashion, each particle moves in a straight line untill it collides with another particle and changes direction
Informações
- Descrição
- This is a deck of flashcards on physical change.
- Criado por
- Hamza Ahmed
- Visualizações
- 19
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