Timstar - Science

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.

Blue.

Black.

Blue.

Red.

Yellow.

Grey.

Short white links.

Medium purple links.

Medium grey links.

Long grey links.

Long purple links.

Molymod® Spares, short link remover.

For structures of sulphur, sodium chloride, diamond and graphite, metals, acids and bases, petroleum, soaps and detergents, nylon, water and ice, polymers, amorphous structures.

Unit™ Molecular Building System is probably the most versatile and durable large scale molecular model building system for front of class demonstrations. Easily build large large-scale models of organic, inorganic and biochemical molecules for demonstration in lecture halls and classrooms. Show molecular shapes with rotating single bonds and non-rotating double and triple bonds, structural isomers and optical isomers, ring structures, chair-boat 'flip' of cyclohexane and VSEPR theory. You can make models of hydrocarbons, alcohols, amines, organic and inorganic acids and bases, carbohydrates, benzene, chlorinated molecules, inorganic molecules and more that the whole class can see! The system uses large (44mm diameter) spheres in seven colours to represent different atoms plus 25mm diameter white sphere to represent hydrogen atom. versatile peg system allows you to use each large model atom in either tetrahedral (sp3), trigonal (sp2), linear (sp), trigonal bipyramidal (dsp3) and octahedral (d2sp3) geometries. These can then be joined with either rigid aluminium or flexible vinyl tubes. These larger scale models are perfect for lectures and classroom demonstrations. Contents include: 70 Atoms: 18 Carbon (black); 6 Oxygen (red); 4 Nitrogen (blue); 6 Halogen (green); 2 Sulphur (yellow); 2 Metal (silver); 2 Other element (white); 30 Hydrogen (white). 144 Bonding pegs: 48 radial, 24 polar, 72 and coordinate. 90 Bonds: 36 Rigid tube (metal) 65 mm; 40 Rigid tube (metal) 83 mm; 4 Rigid tube (metal) 125 mm; 10 Flexible tube (white) 90 mm. • Structures can be seen from the back of the class • Bonds and atoms are to scale for accuracy at 8.5cm per 100pm • Sturdy pegs join atoms and bonds at any bond angle • Easy to handle, build and take apart • Durable plastic and metal parts enable long • Full range of supplementary atoms, bonds and orbitals available

A sturdy, compact pH meter which gives fast, accurate readings, displayed clearly on large LCD. The thin long-reach tube fits easily into test tube. Two-point calibration with automatic buffer recognition. Takes CR2032 cell (included). • Range: pH 0.00-14.00 • Resolution: 0.01 pH • Accuracy: ±0.2 pH • Battery life: 1000 hours • Dimensions: 71 x 50 x 21 mm (excluding probe) • Weight: 50 g

Replacement Electrode for PH180100

Compact, waterproof pocket meter with dual display showing pH and °C. • pH range 0.0-14.0 • Temperature range 0.0-60.0 °C • A.T.C. auto shut off (after mins) • Automatic or point calibration • Replaceable pH electrode • Dimensions (L x W x D): 163 x 40 x 26 mm

Replacement Electrode for pH Pocket Testers

This pocket pH meter is easy to use, giving fast, accurate and repeatable measurements of pH values. It has the unique feature of a retractable electrode. The LCD display has large digits making it easy to read and the protective cap allows the inclusion of a small sponge to keep the electrode moist to help prolong its life. Dimensions (L x W x D): 158 x 40 x 34 mm. • 0 to 14.0 pH 0.1pH (MPH-5011) • Impact-resistant ABS case • Splash-proof membrane keypad • Electrode can be extended up to 80 mm • Manual calibration via screw trim pot • Pocket clip moulded on the rear of the case • Supplied with electrode, protective cap, calibration screwdriver, 50 mL calibration solution and carry case • Powered by 9 V PP3 battery • Weight: 120 g • Warranty: 6 months

This pocket pH meter is easy to use, giving fast, accurate and repeatable measurements of pH values. It has the unique feature of a retractable electrode. The LCD display has large digits making it easy to read and the protective cap allows the inclusion of a small sponge to keep the electrode moist to help prolong its life. Dimensions (L x W x D): 158 x 40 x 34 mm. • 0 to 14.0 pH 0.01pH (MPH-5011A) • Impact-resistant ABS case • Splash-proof membrane keypad • Electrode can be extended up to 80 mm • Manual calibration via screw trim pot • Pocket clip moulded on the rear of the case • Supplied with electrode, protective cap, calibration screwdriver, 50 mL calibration solution and carry case • Powered by 9 V PP3 battery • Weight: 120 g • Warranty: 6 months

These buffer solution capsules for use with pH electrodes are convenient and easy to use. Simply split the capsule in two and add to 100 mL of deionised/distilled water and mix. No minimum shelf life, so will keep for years!

These buffer solution capsules for use with pH electrodes are convenient and easy to use. Simply split the capsule in two and add to 100 mL of deionised/distilled water and mix. No minimum shelf life, so will keep for years!

These buffer solution capsules for use with pH electrodes are convenient and easy to use. Simply split the capsule in two and add to 100 mL of deionised/distilled water and mix. No minimum shelf life, so will keep for years!

These buffer solution capsules for use with pH electrodes are convenient and easy to use. Simply split the capsule in two and add to 100 mL of deionised/distilled water and mix. No minimum shelf life, so will keep for years!

pH Electrode Cleaning Solution, 'Hanna'

Robust, double junction gel filled electrode with temperature range to 80°C. With free cleaning solution.

A high performance, single junction, refillable electrode with temperature range -5 to 100°C. With free cleaning solution.

pH Electrode Storage Solution, 'Hanna'

Conical (Erlenmeyer) Flasks - Timstar, 100/1

Conical (Erlenmeyer) Flasks - Timstar, 100/2