Descriptor
Publication Type
| Reports - Descriptive | 2 |
| Guides - Classroom - Teacher | 1 |
| Journal Articles | 1 |
| Reports - Research | 1 |
| Speeches/Meeting Papers | 1 |
Education Level
Audience
| Administrators | 2 |
| Practitioners | 2 |
| Researchers | 2 |
| Teachers | 2 |
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedLunn, George; Sansone, Eric B. – Journal of Chemical Education, 1989
Chromium(VI) compounds are classified as oxidizers and must be specially packaged and transported for disposal while Cr(III) compounds are considered nonoxidizers. A process which reduces Cr(VI) to Cr(III) by adding sodium metabisulfite followed by neutralization with magnesium hydroxide is explored. (MVL)
Descriptors: Chemical Reactions, Chemistry, College Science, Environmental Standards
Download full textKirschner, P. A. – 1989
The Prime Minister's Committee on Natural Science in Education in Great Britain reported in 1918 that "...in many schools more time is spent in laboratory work than the results obtained can justify." Seventy years later this conclusion can often still be drawn. This is particularly a problem in open distance education where laboratory practicals,…
Descriptors: Academic Achievement, College Science, Experiments, Higher Education
