atomic structure and periodic table

• Solvent is something a solute dissolves in
• Soluble means the substance can be dissolved
• Insoluble means the substance cannot be dissolved
• A substance that dissolves is usually called a solute
• A solution is formed when a solute dissolves in a solvent
• Filtration is a method to separate a solid and a liquid. The solid is collected on a filter paper, while the liquid passes through it and is collected in a separate container.
•  Crystallisation is performed by heating a mixture so that the solvent evaporates. Eventually, crystals of the solute will form.
• A compound contains two or more chemically combined elements
• Chromatography method:

  • Draw a pencil line near bottom of paper
  • Place a sample of each ink on solvent line
  • Pour shallow layer of solvent into beaker
  • Place chromatography paper into beaker and place a lid
  • Wait for the solvent to rise and remove paper when solvent is almost at the top