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Z245852

Cochranes molecular models

minit, DNA, single kit with booklet

Synonyme(s) :

chemistry model sets, molecular model sets

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About This Item

Code UNSPSC :
60104506
Nomenclature NACRES :
NB.17

Description

Scale: 2 cm = 0.1 nanometer (1 Å), Minit 3 cm = 0.1 nanometer (1 Å), Orbit

Caractéristiques

no. of atoms 880
no. of bonds> 1,200

Fabricant/nom de marque

Cochranes 0095

H × l

1 m × 30 cm

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Description générale

Use this cost-effective set to create an impressive display and teaching model. The built Minit Proview model shows the DNA double helix with up to 15 base pair layers and illustrates more than one turn of the double helix. Every atom is shown, colour-coded, with the correct bonding angles.

Groups can make up the subassemblies: Thymine-Adenine; Cytosine-Guanine, sugar rings and phosphate groups which can then be brought together to make the finished model. The model hangs between two plates from clear strings and comes with comprehensive instructions and a worksheet examining the structure of DNA and the mechanism of transcription.

Scale: 2 cm = 0.1 nanometer (1 A), Minit.
An extensive model system offering 15 atomic bonding configurations in 12 colors of plastic atoms. The carbon atom is represented in nine configurations: linear, trigonal (in five angle variations), tetrahedral, octahedral, trigonal-bipyramidal. Models come in two sizes: Orbit and Minit. Spare atom centers and bonding tubes are available for all model kits.

Please see Technical Information Bulletin AL-183 for a listing of these items, available on our website at sigma-aldrich.com

Certificats d'analyse (COA)

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Articles

VSEPR Chart | Valence Shell Electron Pair Repulsion Theory

Use our handy VSEPR chart to find the 3-D geometric VSEPR shapes of molecules and ions and learn about VSEPR theory and shapes.

VSEPR Chart | Valence Shell Electron Pair Repulsion Theory

Use our handy VSEPR chart to find the 3-D geometric VSEPR shapes of molecules and ions and learn about VSEPR theory and shapes.

VSEPR Chart | Valence Shell Electron Pair Repulsion Theory

Use our handy VSEPR chart to find the 3-D geometric VSEPR shapes of molecules and ions and learn about VSEPR theory and shapes.

VSEPR Chart | Valence Shell Electron Pair Repulsion Theory

Use our handy VSEPR chart to find the 3-D geometric VSEPR shapes of molecules and ions and learn about VSEPR theory and shapes.

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