Matter: Occupies volume and space, particles in constant motion, has mass. Separation techniques:

• Filtration
• Dissolution - Solubility
• Crystallization - Heat, cool down to turn into crystals
• Evaporation
• Distillation - Different boiling point
• Paper chromatography - attraction to mobile phase

Pure: Element, compounds Mixture: Homo and heterogenous

Changes in state names

Gas $\to$ Liquid: Condensation Liquid $\to$ Solid: Freezing Solid $\to$ Gas: Sublimation Gas $\to$ Solid: Deposition Solid $\to$ Liquid: Melting Liquid $\to$ Gas: Vaporizing