Page 83 - Career Readiness Catalog

CHEMISTRY

SUBLEVEL ORBITALS OF ATOMS
Kit #140

Using specialty-designed components to simplify rather abstract concepts, students assemble
their own spatial three-dimensional models . The models demonstrate the position and number
of electrons along the x, y and z axes. They also demonstrate the orbitals of the sublevels of
the major energy levels .

As students assemble the models, they review the four quantum numbers and Pauli’s Exclusion
Principle . They also identify the number and position of electrons in various atoms .
Accommodates unlimited classes, each with 12 groups of two students.
Kit No. 140 $92.10 LITERACY

NONCONSUMABLE

BIOFUELS: INVESTIGATING ETHANOL
PRODUCTION AND COMBUSTION

Kit #39S
This activity includes three major parts .
• Investigation One - students observe a demonstration of the
fermentation of corn and cane sugar, the two food sources used
most commonly to produce ethanol, and the distillation of the
fermented stillage to produce fuel .
• Investigation Two - students investigate the energy released by
the combustion of ethanol and kerosene and compare the results .
• Investigation Three - students measure and compare two by-
products - CO 2 and particulate matter - of the two fuels . Students
compare results and discuss the trade-offs of biofuels and fossil fuels
as sources of energy .
Accommodates 6 groups of four students.
Kit No. 39S $236.75 LITERACY STEM AG
Add a Group No. 39SEL $22.60 REFILLABLE ADD A GROUP

For discounted pricing visit the “Your State” page on lab-aids.com to contact your Curriculum Sales Specialist. 81