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100 Atom Wooden Molecular Model Kit100 Atom Wooden Molecular Model Kit
100 Atom Wooden Molecular Model Kit
12929

This is an excellent Student Atomic Molecular Set, to construct and understand three dimensional Molecular Structures in Organic and Inorganic Chemistry Studies. It consists of 100 wooden colored atoms and 85 bonds. Construction and teaching of Triple and Double bonds is with ease due to the flexible nature of the bonds. Atom holes are drilled with precision for good grip and bond angles.

The kit gives you three different types of bonds to choose from:
35 aliphatic bonds (3.8 cm long)
35 C-H bonds (2.5 cm long)
15 aromatic bonds (2.9 cm long, for constructing benzene ring compounds)

The colored balls in the set represent the following atoms:
30 carbon (black)
12 oxygen (red), 5 nitrogen (orange)
30 hydrogen (white)
18 halogens (green)
5 sulfur (yellow)

The balls are 2 cm in diameter and are drilled to accept the springs.

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$40.50 Each
2,6-Dichloroindophenol Sodium salt (indophenol), reagent - 1g
2,6-Dichloroindophenol Sodium salt (indophenol), reagent - 1g
13409

2,6-Dichloroindophenol Sodium salt (indophenol), reagent - 1g

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$22.95 Each
5-Amino-2,3-dihydro-1, 4-phthalazinedione (luminol) -1g
Agar Powder, 100 Mesh - 100g
Agar Powder, 100 Mesh - 100g
13391

Non-nutrient agar powder

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$34.50 Each
Air Pollution Test Kit
Air Pollution Test Kit
15177

Learn concepts of air pollution and its harmful effects using one form of a common air pollutant, sulfur dioxide on experiments with plant life. This kit provides instruction, apparatus and materials to experiment with plant seedlings exposed to a sulfur dioxide atmosphere at a known concentration which produces an effect on plant life that can easily be observed within several days.

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$99.00 Each
Aluminum Metal (20 gauge sheet) - 12" x 12" x .032"
Aluminum Metal (20 gauge sheet) - 12" x 12" x .032"
13393

Aluminum Metal (20 gauge sheet) - 12" x 12" x .032"

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$21.75 Each
Aluminum Metal Shot - 500g
Aluminum Metal Shot - 500g
13392

500 grams of Aluminum Metal Shot.

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$28.95 Each
Ascorbic acid (vitamin c), lab grade, crystal
Save 34%
Aspirin and Antacid Analysis Kit
Aspirin and Antacid Analysis Kit
15157

Two commonly used drugs, aspirin and antacids, will be analyzed separately. After investigating samples included in kit, students can select brands of their own choice for additional comparison. Grades 9-12.

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$42 Each $63.95 Each
Atomic Model Set - Junior
Atomic Model Set - Junior
15490

Model different organic and inorganic compounds with this set. Set includes 30 connecting lugs and 75 colored balls, and a molded storage box with compartments.


SMALL PARTS: NOT FOR CHILDREN UNDER 3 YRS.


Contents:
Carbon (Black) . . . . . . . . . . . . . 12
Hydrogen (White) . . . . . . . . . . . 26
Oxygen (Red) . . . . . . . . . . . . . . . 6
Halogen (Green) . . . . . . . . . . . . 5
Metal (Yellow) . . . . . . . . . . . . . . . 4
Monovalent Metals (Orange) . . 4
Divalent Metals (Orange) . . . . . . 6
Trivalent Metals (Yellow) . . . . . . . 6
Non-Metals (Blue) . . . . . . . . . . . . 6
Bonds . . . . . . . . . . . . . . . . . . . . 30


This set consists of molded polystyrene balls of different colors and sizes along with connecting lugs of different sizes. Set is very helpful in modeling different organic and inorganic compounds. Set consists of 30 connecting lugs and 75 balls of different colors and sizes.

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$23.50 Set
Atomic Model Set - SeniorAtomic Model Set - Senior
Atomic Model Set - Senior
15489

Model different organic and inorganic compounds with this large set suitable for use by an entire class. Set includes 150 connecting lugs and 370 colored balls, and a molded storage box with compartments.


SMALL PARTS: NOT FOR CHILDREN UNDER 3 YRS.


Contents:
Carbon (Black) . . . . . . . . . . . . . 60
Hydrogen (White) . . . . . . . . . . 125
Oxygen (Red) . . . . . . . . . . . . . . 30
Halogen (Green) . . . . . . . . . . . 25
Metal (Yellow) . . . . . . . . . . . . . . 20
Monovalent Metals (Orange) . 20
Divalent Metals (Orange) . . . . . 30
Trivalent Metals (Yellow) . . . . . . 30
Non-Metals (Blue) . . . . . . . . . . . 30
Bonds . . . . . . . . . . . . . . . . . . . 150


This set consists of molded polystyrene balls of different colors and sizes along with connecting lugs of different sizes. Set is very helpful in modeling different organic and inorganic compounds. Set consists of 150 lugs and 370 balls of prescribed colors and sizes packed in a molded box having separate space for every particular color and size ball.

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$110.95 Set
Benedict's Solution, qualitative - 1 liter
Bromothymol blue, indicator solution, 0.04% - 500ml
Buffer Solution, blue, ph 10.00 - 500ml
Buffer Solution, red, ph 4.01 - 500ml
Buffer Solution, yellow, ph 7.00 - 500ml
Calcium Sulfate (plaster of paris), powder - 2.5kg
Calcium Sulfate (plaster of paris), powder - 500g
Changes in Matter (Kit)
Changes in Matter (Kit)
13581

Introduction to elements, compounds, and mixtures, along with changes that these substances undergo as well as the characteristics of some elements, symbols for elements, and structures that make up atoms. Common mixtures are separated by evaporation and chromatography . New compounds are formed and changes that indicate chemical reactions are observed. Reproducible manual that includes 10 activities/laboratories, vocabulary lists and definitions, and a complete answer key. Experiments include: Classes of Matter, Elements, Symbols for Elements, Atoms, Common Mixtures, Separation by Evaporation, Separation by Chromatography, and more. 24 Students in Groups. Materials needed but NOT included: goggles, tape. Grades 4-9.

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$190.00 Each
Chemical Properties (Kit)
Chemical Properties (Kit)
11861

Seven different solutions are combined in every possible combination and chemical properties are identified by observing their reaction with other solutions. Chemical reactions include gas production, color changes and formation of recipitates. Students use their information to identify 4 unknown solutions. Contains materials to conduct the experiment twice, safety glasses. For 24 students working in groups of 4. Grades 7-11.

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$177.00 Each
Citric Acid, hydrous, lab grade - 100g
Citric Acid, hydrous, lab grade - 500g
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Cleaning Up Oil Spills (40 Student Kit)
Cleaning Up Oil Spills (40 Student Kit)
14905

Observe the use of microbes for oil degradation. Model various spill scenarios and monitor the effectiveness of the provided freeze-dried oil-degrading microbe mixture in remediating the waste. Set up a simulated oil spill in water and treat it with the special microbial product to observe the physical changes degradation of oil film over time. Additionally, they simulate three spill scenarios on beach sand, gravel and cobbles in order to observe the difference in degradation rates. The class also explores bioremediation methods for other waste chemicals and compares their effectiveness to traditional clean-up methods. Grades 7-10.

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$58 Each $79.95 Each
Cobalt chloride, lab grade, crystal - 100g