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  • Chemist: A person who examines what things are made of and how they change
  • Crystal: A shape that is colorless and see-through. Might appear to have edges and points
  • Opaque: Not allowing light to pass through
  • Reaction: A change
  • Solution: Made when a substance dissolves and the reaction forms a liquid
  • Suspension: Made when a substance does not dissolve completely; liquid and powder remain separate. Oil and water, for example, create a suspension
  • Toxicologist: Person who tests body fluids, such as saliva, or organs, such as lungs, for the presence of drugs, alcohol or poison
  • Trace evidence: Small amounts of evidence, such as soil or glass, that could connect a suspect to the crime
  • Translucent: Not completely clear, but clear enough to allow light to pass through