Physical Change Flashcards
What is a physical change?
Physical change is when a substance changes shape, form, state, etc. but stays as the same substance
What are some types of physical change?
- change of state (melting, freezing, etc.)
- expansion / contraction
- mixing
- dissolving
What are the three states of matter?
- solid
- liquid
- gas
What is it called when a solid becomes a liquid?
Melting
What is it called when a liquid becomes a gas?
Evaporation
What is it called when a gas becomes a liquid?
Condensation
What is it called when a liquid becomes a solid?
Freezing / Solidification
What is it called when a solid becomes a gas?
Sublimation
What is it called when a gas becomes a solid?
Deposition
What is the particle theory?
All substances are made up of particles
What is a mixture?
A mixture is a physical change
What are the three types of mixtures?
- General mixtures (salt and pepper)
* Solutions (salt in water)
• Alloys
What is a solvent?
The substance of the that does the dissolving is called a solvent
What is a solute
The substance whose particles ‘disappear’ is called the solute
What is diffusion?
Diffusion is when substances move from where there is a lot of themselves to where there is less of themselves
