elements, compounds and mixtures

• What is a mixture?

  A combination of two or more substances physically combined, where each component retains its individual properties.
• What is a homogeneous mixture?

  A mixture where the components are evenly distributed throughout (e.g., saltwater).
• What is a heterogeneous mixture?

  A mixture where the components are not evenly distributed, and distinct parts can be observed (e.g., sand and water).
• How are mixtures separated?

  Using physical methods such as filtration, distillation, or evaporation.
• What is an element?

  A substance consisting of a single type of atom, found on the periodic table.
• What is a compound?

  A substance formed when two or more elements are chemically combined in a fixed ratio.
• How do you separate iron filings from sand?

  Using a magnet, since iron is magnetic and sand is not.