Students will design a laboratory procedure to analyze the amount of copper in brass using a spectrophotometer. Students identify the correlation among wavelength, absorbance, and concentration for each of three possible ions that may be obtained from brass: copper, zinc, and iron. The activity…

This kit and the accompanying teacher’s guide have been developed by the American Chemical Society through grants from the National Science Foundation and National Institutes of Health. Through the lessons in this lab students will learn how human activity may affect natural water sources. Using an…

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This kit has been designed to allow the analyst to perform a very simple titration to determine the hardness of their freshwater sample. The titration uses an easily identifiable color transition to indicate the end of the analysis. The kit contains everything an analyst would need to perform a…

It is the job of crime scene investigators to analyze a crime scene and examine/gather various types of evidence that may be used to piece together a possible series of events. One type of useful evidence, particularly in the case of violent crimes, is blood spatter. An investigator experienced in…

Create your own volcano for a science fair demonstration. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A; PS1.B Performance Expectations: MS-PS1-2; HS-PS1-2 Cross Cutting Concepts: Patterns Engineering Practices: Analyzing and Interpreting Data; Scientific…

This is a simple and economical type of electrolysis apparatus. Platinum electrodes are attached to insulated connecting rods which are attached to binding posts mounted on a non-conducting support. The support rests across the top of a battery jar (not included) and has two clips that each hold an…

The Gram stain is one of the most important differential staining techniques used by microbiologists to determine if bacteria are Gram-positive or Gram-negative. Kit Includes: 4 x 25mL Ethyl Alcohol, Denatured, 95% 1 x 30mL Crystal Violet Ammonium Oxalate 1 x 30mL Safranin O, 1% Aqueous Solution 1…

Use for blood typing of real human blood. Each vial contains enough antisera for 75 students. Refrigeration recommended until used. Materials from human-derived cell lines were found to be negative in tests for Hepatitis B, HIV and EBV. DOT Info: Non-regulated

Students will learn about acids and bases through a class discussion and then test a dilute acid and dilute base with neutral litmus paper to learn how the paper indicates something is acidic or basic. Once that skill is learned they can move on to test some common items that would be found around…

Of all the naturally occurring metals copper is one of the most useful and versatile. Evidence suggests copper has been used by humans for at least 10,000 years. Copper is used for architecture. It is used for electrical wiring, water pipes, and plumbing fixtures. It is found in automobiles and a…

Sulfuric acid is poured on sucrose. The resultant reaction produces a large amount of black foam as well as steam and smoke. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A; PS1.B Performance Expectations: MS-PS1-2 Cross Cutting Concepts: Patterns…

Aspirin is to this day the most widely used painkiller and largest selling non-prescription medicine in the world. Learn about the history of the development acetylsalicylic acid (aspirin) and test the performance of several different types of aspirin. Students will examine the solubility of…

Using the materials provided, students will be able to examine the effects of nutrient deficiency on plants. Specially prepared nutrient solutions (included in the kit) will allow students to deprive each plant of one of seven specific vital nutrients. Over time, students will determine the…

Prepare fresh bromine water in a couple of minutes! Save on hazardous transport costs and avoid storing elemental bromine in your storage room. Kit Contains: 2.15g Potassium Bromide 0.6g Potassium Bromate 25mL Sulfuric Acid 50mL Bromine Water-Btl / Label Only DOT Info: Small quantity exemption…

Often times, during a criminal investigation, police and crime scene investigators must use all available tools and pieces of evidence to work backwards and create the most likely scenario as to what might have occurred. Different types of evidence provide different pieces to the puzzle. Learn…

Study both processes of endothermic and exothermic reactions. Reactions are safely carried out in plastic bags. The students can pass the bags around to feel the results of the reactions. Aligned to the Next Generation Science Standards (NGSS)* Disciplinary Core Ideas: PS1.A; PS2.B Performance…

Monitor the voltage generated by a biological fuel cell, using the yeast Saccharomyces cerevisiae. A simple sugar will be used as a food source for the yeast and methylene blue will be employed as an electron mediator. The cell will be constructed without the mediator and a baseline voltage will be…

Use your forensic techniques to solve the crime of the missing frogs from the biology classroom. Four possible suspects have been identified by the authorities. Use fingerprints, hair examination, and chemical analysis of ink by thin-layer chromatography to help determine the most likely culprit.…

KEM-KITS contain a selection of basic small scale glassware for extraction, reflux, reflux with addition, fractionation, distillation (steam, atmospheric and vacuum), as well as for other organic preparations. The fourteen components itemized are supplied in a double-wall heavy-duty…

The history of teeth cleaning agents actually goes back thousands of years. Toothpaste as we know it today however is a comparatively recent development. In this activity, students will investigate several properties of toothpaste samples, provided in the kit, including presence of fluoride, pH,…

Colored printing helps your students distinguish between metals, non-metals, and noble gas families as well as allowing them to differentiate types of metals, solids, liquids and gases from synthetic elements. Name, symbol, atomic number, weight, mass, electron configuration are included. The…

In this experiment you will expose living yeast cells to three different sugars. The sugars used will be glucose, sucrose, and lactose. When living yeast cells are exposed to these sugars, the cells should begin to utilize the sugars as a food source if they are capable of metabolizing them. Upon…

In this lab, the student learns the difference between forensic chemistry and forensic toxicology. They gain knowledge in understanding how over-the-counter drugs, controlled drugs, and illegal drugs may act as toxins. Students will have the opportunity to perform presumptive chemical tests on…

Refill Kit Includes: 4 Simulated Blood Samples Donor #1 Donor #2 Donor #3 Donor #4 1 btl Simulated Anti-A serum 1 btl Simulated Anti-B serum 1 pkg Toothpicks DOT Info: Non-regulated

The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium is reacted with oxygen from the air in a crucible, and the mass before and after the oxidation is measured. The resulting masses are used to calculate…

Students collect data using different solvents to identify the optimal solvent for separation. They will then illustrate the intermolecular forces that are acting on the molecules in the separation. Students evaluate the chromatograph with different solvents and establish a connection between…

Ferrofluid is a colloidal liquid made of particles less than 10 nanometers in diameter. When exposed to to a magnetic field, the nanoparticles form regular patterns of peaks and valleys. You can demonstrate magnetic fields for your students in a very visual way. Included: 50mL Ferrofluid WARNING:…

Chemical reactions vary greatly. For example, some chemicals react extremely fast like an explosion, while others, like rusting metal, can react over a long period of time. Understanding the factors that influence the rate of a reaction allows the scientist to speed up or slow down reactions as…

While sources of fresh water are usually associated with visible bodies of water such as lakes, rivers, ponds, and streams, the majority of fresh water on Earth is actually underground, collectively referred to as groundwater. Like fresh water found on the surface, groundwater can flow beneath the…

An excellent, faster working, alternative to traditional gravity based liquid filtration. Contents: 500ml Filtering Flask 90mm porcelain Buchner Funnel Hand Vacuum Pump with Gauge Pack of 90mm Filter Papers (pack/100) Rubber Stopper Vacuum Hose Instruction Manual

Chemical reactions take place all around us. Being able to identify reactions and communicate what is happening is vital to the scientific community. This kit will introduce two common types of chemical reactions; single replacement and double replacement. Students will perform a series of…