B2B

Acrylic adhesive won’t discolor, crack or peel.

Spare carbon electrodes for EL06891.

Acrylic adhesive won’t discolor, crack or peel.

This kit uses the juice within lemon as an electrolyte in an oxidation-reduction reaction to produce useful electricity sufficient to power clock. The electrodes must be sanded clean between each attempt. Requires lemons to make ""batteries"" in series to generate sufficient voltage to power the clock.

Increasingly popular high graphic full specification training ball. Deep pimple emboss. Includes ball sack.

Consisting of an inverted U-tube with its ends closed by sintered discs. Dimensions (Diameter W x H): Arms 13 x 80 x 100 mm.

This set allows students to experiment with the characteristics of primary cells (voltaic cells). By using different electrodes and electrolytes, various voltaic cells can be made and tested. The set contains various different electrodes, including zinc, lead, aluminium, carbon, tin, copper, nickel and iron. Also included are a plastic cell container with electrode holders and porous pot. Instructions included. Dimensions: 100 x 20 mm (approx.).

Suitable for use with EL180875 and EL180877.

Comprises three parallel tubes, joined at the bottom with a horizontal tube. The central tube has a funnel for filling with water, and the side tubes have open ends at the bottom to allow bungs that hold electrodes to be fitted, and jets with stopcocks at the top for collecting gas in test tubes. The side tubes are graduated 0-50 x 0.2 mL so that the volume of gas in each can be measured. Clamps and support base (sold separately) are recommended so the unit can be mounted on retort rod.

Comprises three parallel tubes, joined at the bottom with a horizontal tube. The central tube has a funnel for filling with water, and the side tubes have open ends at the bottom to allow bungs that hold electrodes to be fitted, and jets with stopcocks at the top for collecting gas in test tubes. The side tubes are graduated 0-50 x 0.2 mL so that the volume of gas in each can be measured. Clamps and support base (sold separately) are recommended so the unit can be mounted on retort rod.

For student experiments. Embedded platinum electrodes are connected via 4 mm sockets. Two miniature test tubes are included for gas collection.

Shade welding filter lenses, as recommended for safe viewing of burning magnesium etc. Sold as pack of 10 filters.

Shade welding filter lenses, as recommended for safe viewing of burning magnesium etc. Sold as pack of 10 filters.

Cobalt blue. Dimensions: 75 x 50 mm.

Fused into glass handle.

Specific gravity. Universal range 370 mm 0.01°SG.

Spare Lamp for ME10365.

Soda Glass. Outside diameter 1.8-2.0 mm. Wall thickness 0.28-0.32 mm. In packs of 100.

Chemical jigsaws offer highly effective method of teaching chemical formulae and equations. It uses number of interlocking pieces with plus signs and arrows that enable students to build representations of covalent and ionic compounds and also to model equations. Advantages: • More effective understanding of formulae • Enhanced motivation • Use of OHP for demonstrations. Covalent jigsaw:- In the covalent jigsaw, atoms are represented by coloured disks with cut-outs corresponding to the positions of atoms in the periodic table. Atoms are joined by clear bonds representing electrons shared between atoms. The covalent jigsaw is available in two boxed sets. Ionic jigsaw:- The ionic jigsaw pieces build on the popular method of using squares and rectangles to aid the determination of ion ratios when constructing formulae. The parts are translucent and can be placed on an OHP for projection. The formulae can be identified by shape, colour and identifying symbols/formulae can be written on them in felt-tip pen. Please Note: the KS3 kit is required prior to the KS4-upgrade kit.

Chemical jigsaws offer highly effective method of teaching chemical formulae and equations. It uses number of interlocking pieces with plus signs and arrows that enable students to build representations of covalent and ionic compounds and also to model equations. Advantages: • More effective understanding of formulae • Enhanced motivation • Use of OHP for demonstrations. Covalent jigsaw:- In the covalent jigsaw, atoms are represented by coloured disks with cut-outs corresponding to the positions of atoms in the periodic table. Atoms are joined by clear bonds representing electrons shared between atoms. The covalent jigsaw is available in two boxed sets. Ionic jigsaw:- The ionic jigsaw pieces build on the popular method of using squares and rectangles to aid the determination of ion ratios when constructing formulae. The parts are translucent and can be placed on an OHP for projection. The formulae can be identified by shape, colour and identifying symbols/formulae can be written on them in felt-tip pen. Please Note: the KS3 kit is required prior to the KS4-upgrade kit.

These 3D Molecular Designs Magnetic Water Kits© will help students to understand the structure and properties of water. They can ""see and touch"" water in its dimensions and embedded magnets enable students to ""feel"" hydrogen and oxygen atoms attract and repel each other. Features include: Magnets in oxygen atom, so students can make ice; Permanently embedded magnets (magnets won't fall out when atoms are unassembled); Removable hydrogen atoms, so students can assemble water and compare hydrogen bonds to covalent bonds; Non-polar ethane, so students can see and feel how non-polar molecules interact with polar molecules; Hydroxyl group, so students can make ethanol; CD with Lesson Plans. As students explore the 3D water kit they will be able to: See spontaneous bonding, Compare hydrogen bonds to covalent bonds, Make ice crystals, Dissolve salt, Evaporate water, Add non-polar ethane to water, Create ethanol, Explore capillary action. Each 3D Molecular Designs Water Kit© cup includes: 12 water molecules, sodium, chloride, ethane and hydroxyl group. All atoms are magnetised to reflect their positive or negative charges (except non-polar ethane). This 6-Cup Water Kit© also includes CD with Secondary school lesson plans.

This 3D Molecular Designs Magnetic Sodium Chloride Model will help students to understand the structure and properties of ionic compounds. Each ion has embedded magnets to simulate ionic bonding. The 3 x 3 x 3 Lattice contains 27 ions (13 of type of ion and 14 of the other.) Lattices do not include water molecules, which are available, if required, in the magnetic water molecule kits. The model will help students gain an understanding of: Ionic structure and bonding, The cubic nature of salt crystals, Efficient lattice packing, High melting temperature, and Brittleness Cleavage planes.

This 3D Molecular Designs Magnetic Sodium Chloride Model will help students to understand the structure and properties of ionic compounds. Each ion has embedded magnets to simulate ionic bonding. The 4 x 4 x 4 Lattice contains 64 ions (32 Sodium and 32 Chlorine). Lattices do not include water molecules, which are available, if required, in the magnetic water molecule kits. The models will help students gain an understanding of: Ionic structure and bonding, The cubic nature of salt crystals, Efficient lattice packing, High melting temperature, and Brittleness Cleavage planes.

The magnetic Molecule Demonstration kit, from Bright of Sweden, is the perfect demonstration tool to help demonstrate molecules and chemical bonding to students in an easy and concrete way. The kit comes with 90 magnetised 'atoms' in different colours white (representing e.g. Hydrogen), black (e.g. Carbon), red (e.g. Oxygen), blue (e.g. Nitrogen), green (e.g. Chlorine) and yellow atoms (e.g. Sulphur) with 20 each of the black, white and red atoms and 10 each of the blue, green and yellow, enabling wide range of molecules to be represented. It also contains 50 bindings (bonds) the model can be used with or without bonds. As all parts of the kit are magnetised, they can be used directly on magnetic whiteboard or blackboard. Contents: 20 each of white, black and red 'atoms' 10 each of green, blue and yellow 'atoms' 50 bindings (bonds) Special storage box .

Study the unique molecular structure of carbon nanotubes. Fullerene molecules are all visually interesting and can be well represented by molecular models. Their unique molecular structure results in numerous potential exciting applications in current day nanoscience which can engage pupils and help to create link between chemistry and the 'real world'. This 530 mm model uses atoms from the Minit system which can be arranged to show the chair, zigzag or chiral structures of the tube and the associated properties. Particular areas to study include: • The similarities in structure of carbon nanotubes and the layers in graphite. • How curvature is achieved in the molecular shape of the ends of nanotubes due to the difference in bonding angles. • Different symmetries of carbon rings in the carbon nanotube the chair, zigzag and chiral structures and how these differences affect properties such as strength and conductivity and hence potential applications. Kits contains 260 atoms. Please note this kit version requires assembly.

A basic introductory set designed to help students understand chemistry. Consisting of: Spheres: 12 Carbon, 7 Oxygen, 2 Nitrogen, 1 Sulphur, 6 Halogen and 20 Hydrogen. Links: 33 short grey, 12 long grey and 29 Hydrogen connectors. Packed in plastic box with instructions.

Designed to make models of most compounds in the G.C.S.E. and Advanced level courses. Consisting of: Spheres: 24 Carbon, 12 Oxygen, 4 Nitrogen, 2 Sulphur, 12 Halogen, 3 Metal, and 40 Hydrogen. Links: 60 short white, 55 medium grey, and 25 long grey. Packed in plastic box with instructions.

A versatile set suited to G.C.S.E. and Advanced level courses covering a comprehensive range of organic, inorganic molecules from simple ones to complex ions. Consisting of: Spheres: 6Carbon, 22 Oxygen, 10 Nitrogen,12 Sulphur, 8 Halogen, 14 Metal, 7 Phosphorous and 14 Hydrogen. Links: 50 medium grey and mauve, and 36 long grey. Packed in plastic box with instructions.

Consisting of: Spheres: 12 Carbon, 6 Oxygen, 2 Nitrogen, 2 Sulphur, 4 Halogen, 1 Metal, 1 Phosphorous, and 20 Hydrogen, and 2 Pyramidal Nitrogen. Links: 26 short white, 26 medium grey, and 12 long grey. Packed in plastic box with instructions.

Consisting of: Spheres: 6 Carbon, 7 Oxygen, 3 Nitrogen, 2 Sulphur, 6 Halogen, 11 Metal, 2 Phosphorous, and 14 Hydrogen. Links: 20 medium grey, 12 long grey and 5 medium purple. Packed in plastic box with instructions.

MolyorbitaI™ 14 model collection set, containing sufficient parts to make 14 easy to self-assemble atomic orbitals, as shown in the picture. Pink and purple coloured pear shaped lobes represent the two wave phases, positive and negative of the p and d atomic orbitals. The atomic nuclei are represented by opaque white spheres. Each model comes with its own individual colourless transparent base for display purposes. Approximate model heights including base are: s-orbital 5 cm, p-orbital 9 cm, d-orbital 8 cm. Contents: Is, unhybridised x1, 2s, unhybridised x1, 2p, unhybridised x3, 3d, unhybridised x5, model of 2s plus three 2p orbitals, unhybridised x1, sp, sp2, sp3, hybridised x3.

Molyorbital™ model collection set containing Benzene, Ethane, Ethene and Ethyne. This set contains sufficient parts to make the 4 organic molecular orbital models, as shown in the picture. The models show: sigma bonding orbitals, pi bonding orbitals, concept of hybridisation and delocalisation. Contents: 12 carbon and 18 hydrogen atoms, 9 carbon-carbon (oval shaped) sigma bonds, 18 carbon-hydrogen (pear shaped) sigma bonds, 9 pi-bonds (21 pink and 21 purple pieces). Dimensions: Benzene diameter 20cm, height 10cm.

This set is designed for use by students in the classroom under the supervision of teacher or as useful revision aid. Specifically designed and updated for higher level Key Stage 3 Chemistry. Ages: 12+ This new Molymod® set contains total of 66 atoms and includes the following: Mon-metal elements from the periodic table: 14 Hydrogen, 12 Oxygen, 6 Nitrogen, 6 Carbon, 2 Sulphur Group 7 Halogen elements: 2 Fluorine, 4 Chlorine, 2 Bromine, 2 Iodine Metals: 4 grey metal 1 hole (K, Na), 4 grey metal 2 hole (Mg, Ca, Zn, Fe), 4 copper 2 hole (Cu), and 4 grey metal 3 hole (Fe, Al). Connectors: 20 grey single connectors, 40 grey multiple connection links, and 10 purple single bond links which, if required, may be used to represent ionic bonds. Key Stage 3 Chemistry Kit outline Introduction to atoms, elements, compounds and their chemical symbols, molecular formulae and their representation by colour-coded model parts, with an emphasis on modelling the conservation of mass during chemical reactions, whereby the total number of atoms of the reactants equals the total number in the products. This set contains enough parts to model the chemical rearrangement of atoms (i.e. the Chemical reactions) listed below. • Oxidation by combustion of hydrocarbons, and the oxidation by rusting of metals • Thermal Decomposition of metal carbonates • Displacement reactions of metals in salts • Examples of common acids, bases alkalis • Neutralisation reactions of acids and alkalis • Reactions of acids with metals to produce salt plus Hydrogen • Reactions of acids with alkalis to produce salt plus water • Material examples of Polymers, PVC Polyethene. • Extraction of metals by the reduction of metal oxides by Carbon • Greenhouse effect, the production of CO2 by burning of fossil fuels • Reactions of acid rain on the soil, metals and limestone rocks. • Respiration chemical reaction of glucose Although beyond the scope of Key Stage 3 Chemistry, this set can also be used for GCSE Chemistry to model Hydrocarbon (Organic) chemistry up to 6 carbons, including Alkanes, Alkenes, Alkynes, Addition polymers, Alcohols, Carboxylic acids, Esters, Amino acids, Addition reactions of Hydrogen and halogens to Alkenes.

This set is designed for use by students working on their own or in pairs, in classroom under the supervision of teacher, or as revision aid. This Molymod® set contains total of 34 atoms and comes with both standard open and compact links to make either open or compact models. Also included are three flat pink paddles to represent ""R"" groups. Contents: 14 Hydrogen, 7 Oxygen, 3 Nitrogen, 6 Carbon, 2 Sulphur, 1 Copper, 1 Phosphorus, 3 Pink R-Groups, 26 grey single bond links, 12 grey multiple bond links, and 50 compact model links. With 1 kit: • Introduction to Organic chemistry & Functional groups • Simple Aldoses, Ribose, Ketoses, Fructose • Monosaccharides of Glucose, Galactose • Phospholipids • Triglyceride lipids • Saturated and Unsaturated cis/trans Fats lipids • One example of an Amino acid • Building block of DNA, RNA phosphate group • Pyrimidines With 2 kits: • Comparison of Alpha & Beta glucose • Condensation reaction & the Glycosidic Bond • Disaccharides • Formation of proteins & the peptide link • Purines in DNA the Nucleotides With 3 kits: • Carbohydrates • Photosynthesis reaction • Respiration reaction

This kit contains sufficient atom parts to make the Sodium Chloride structure. It is supplied in a plastic container with full self assembly instructions.

This kit contains sufficient atom parts to make the Diamond structure. It is supplied in a plastic container with full self assembly instructions.

This kit contains sufficient atom parts to make the Graphite structure. It is supplied in a plastic container with full self assembly instructions.

This kit contains sufficient atom parts to make the Buckminster Fullerene structure. It is supplied in a plastic container with full self assembly instructions.

This kit contains sufficient atom parts to make the Quartz structure. It is supplied in a plastic container with full self assembly instructions.

This kit contains sufficient atom parts to make the Ice structure. It is supplied in a plastic container with full self assembly instructions.

These kits contain sufficient parts to make individual structures. Complete with Instructions.

These kits contain sufficient parts to make individual structures. Complete with Instructions.

A semi-space filling set for making wide range of biochemistry molecular models. Consisting of: Spheres: 66 Carbon, 34 Nitrogen, 40 Oxygen, 6 Phosphorus, 2 Sulphur, 2 Metal, 105 Hydrogen. Links: 100 short white, 60 non-visible. Packed in 2 plastic boxes with instructions.

An open-type set. Consisting of: Spheres: 21 Carbon, 13 Oxygen, 25 Hydrogen, 11 Nitrogen, 1 Sulphur, 1 Phosphorus. Links: 40 medium grey. Packed in plastic box with instructions.

The Molyorbital™ model collection set contains sufficient parts to make the eight atomic models shown in the picture. The different shapes are examples of the orientations of the bonds and cover coordination numbers to 6. Lone pairs are represented by brown spheres or brown pear shaped parts. The extra pear shaped parts are included in the set to enable protonated models to be made. e.g. Acid/Base theory, the formation of H3O+ as result of the migration of H+ from hydrogen chloride. Models: linear, HCl (hydrogen chloride); linear, BeCl (beryllium chloride); Bent, H2O (water); trigonal planar, BH3 (boron trihydride); Pyramidal, NH3 (ammonia); tetrahedral, CH4 (methane); trigonal bipyramidal, PCl5 (phosphorus pentachloride); Octahedral, SF6 (sulphur hexafluoride).

Green.

White.

Green.

Red.

White.