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Identification of Chemical Reactions

Kit #84

A very important outcome of studying science is to acquire the ability to make and interpret observations. Students initially observe and describe seven different solutions. They then combine pairs of these chemical solutions and use their observations to determine whether or not a chemical reaction took place. Finally, they test an unknown solution and use their previous observations to determine the chemical composition of the unknown.

Details at a Glance

  • 1-2 Days | 1-2 ~50 minute class periods
  • 1 Activity
  • Accommodates unlimited classes, each with 12 groups of 2 students
  • Consumables service 36 students
  • Includes digital resources

Scientific Concepts

•Each pure substance has characteristic physical and chemical properties (for any bulk quantity under given conditions) that can be used to identify it. Substances react chemically in characteristic ways.
•In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants.
•Some chemical reactions release energy, others store energy.
•Substances are made from different types of atoms, which combine with one another in various ways. Atoms form molecules that range in size from two to thousands of atoms.
Key Vocabulary: (optional terms in parenthesis)
chemical composition (decomposition reaction), chemical formula (displacement reaction), chemical reaction (neutralization reaction), energy (oxidation-reduction reaction), product (precipitate), reactant (synthesis reaction)

Guides & Student Sheets

Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.

  • Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
  • Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
  • All materials necessary to carry out the investigation
  • Safety Data Sheets

Kit Components

  • 12 Chemplates® with spatulas
  • 2 Solution 1, Hydrochloric acid, Drop control bottle
  • 2 Solution No. 2, Sodium carbonate, Drop control bottle
  • 2 Solution No. 3, Sodium hydroxide, Drop control bottle
  • 2 Solution No. 4, Potassium chromate, Drop control bottle
  • 2 Solution No. 5, Calcium chloride, Drop control bottle
  • 2 Solution No. 6, Sodium hydrogen sulfite, Drop control bottle
  • 2 Solution No. 7, Copper sulfate, Drop control bottle
  • 2 “Unknown” solution, Drop control bottle
  • 1 Teacher’s Guide with SDS
  • 50 Student Worksheets and Guides
  • Not included and needed for instruction: Eyewear.

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