Mixtures

• What is a mixture?

  Contains elements and compounds not bonded
• How can components of a mixture be separated?

  They can be separated physically
• What are the different methods to separate mixtures?

  Filtration, crystallisation, distillation, chromatography
• What determines the method chosen to separate a mixture?

  The type of mixture being separated
• What is the definition of a pure substance in chemistry?

  • Consists of one element or one compound
• How is 'pure' used differently in chemistry compared to everyday language?

  In chemistry, it means one element or compound
• What is a compound in chemistry?

  A substance formed by the chemical union of elements
• What is a mixture in chemistry?

  Two or more substances not chemically joined
• How do mixtures affect the chemical properties of their components?

  They do not change the chemical properties
• What processes can separate mixtures?

  • Physical processes
  • No chemical reactions involved
  • No new substances are created
• What is the significance of the components of a mixture in terms of chemical reactions?

  They can be separated without chemical reactions