Chem1 Concept Builder - Personal Edition for Macintosh Cost: $34 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions Chem1 Concept Builder - Personal Edition for Macintosh: Chem1 Concept Builder provides guided, interactive and in-depth instruction in General Chemistry at the college and advanced-HS level. It is suitable for self-study or as a supplement to a conventional course, or as the major instructional component of a distance-education course.