All materials can be classified as a conductor, insulator or semi-conductor. Materials are classified according to their resistance to the flow of current. A conductor is a substance that is capable of carrying an electric charge from one point to another. An insulator blocks the flow of current. Semi-conductors are neither. Their conductivity lies in between the two.
In Part 1 of this interesting Lab-Aids, students test several common objects to determine if they are conductors or insulators. In Part 2, The students test electrical conductivity in aqueous solutions.They test an acid, base, salt, alcohol and a hydrocarbon. This kit is an excellent introduction for students in physical science, general science and introductory chemistry courses. Conductivity indicators are required for these activities, but are not included with this kit. We recommend the LAB-AIDS‚® Conductivity Indicator. This kit is packaged complete for 30 students. REQUIRES CONDUCTIVITY INDICATORS.
Scientific Concepts:
Explores electrical conductivity
Develop principles of conductors and insulators
Develop principles of electrolytes and non-electrolytes using acids, bases, salts, alcohols, and hydrocarbons
Test a variety of common materials for their conductivity characteristics
Differentiate between strong, weak, and non-conductors of electricity
Content List:
1Teacher's Guide with MSDS
30Student Worksheets and Guides
15Chemplates‚® with measuring and mixing spatulas
1String, cut, pkg
1Paper clips, metal, pkg
1pics, plastic, pkg
1Rubber bands, pkg
1Insulation copper wire, strips, pkg
2Bottles of hydrochloric acid, 6M, 1/4 oz
2Bottles of denatured alcohol, 1/4 oz
2Bottles of glacial acetic acid, 1/4 oz
3Bottles of deionized water, 2 oz
1Vial of calcium hydroxide
1Vial of sodium chloride crystals
1Vial of sucrose crystals, solid
Classroom Planning:
To complete this kit requires one ~50 minute periods