"Note+Boards"

Test a local water sample to determine overall water quality.

Ideal for rooms with shallow countertops or ceilings below 8', these hoods are constructed of sturdy, epoxy-coated steel both inside and out.

CAS Number: 50-78-2
Formula Weight: 180.16
Formula: 2-CH₃COOC₆H₄COOH
Density (g/mL): 1.35
Boiling Point (°C): Decomposes
Freezing Point (°C): 135
Solubility: Alcohol and Chloroform
Synonyms: Salicylic Acid Acetate, Aspirin, 2-(acetyloxy)-Benzoic acid
Shelf Life (months): 12
Storage: Green

Individual Bones And Bone Sets In High Quality Plastic

Simulate the effects of nitrogen oxides and sulfur oxides on the germination of radish seeds.

CAS Number: 573-58-0
Formula Weight: 696.68
Formula: C₃₂H₂₂N₆Na₂O₆S₂
Hazard Info: Toxic
Solubility: Water and Alcohol
Synonyms: Direct Red 28, C.I. No. 22120, Congo Red Stain, Congo Red Biostain
Shelf Life (months): 36
Storage: Green

CAS Number: 108-24-7
Formula Weight: 102.09
Formula: C₄H₆O₃
Hazard Info: Irritant, Corrosive, Flammable
Density (g/mL): 1.08
Boiling Point (°C): 139.9
Freezing Point (°C): -73
Solubility: Reacts with Water and Alcohol
Synonyms: Acetic Oxide, Acetyl Oxide, Ethanoic Anhydride, Acetic Acid Anhydride
Shelf Life (months): 36
Storage: White

Students Can Build Their Own Model for Better Understanding

Meets AP Science Practices 4, 5, 6, and 7, and Big Idea 4.

CAS Number: 124-09-4
Formula Weight: 116.21
Formula: 1,6-NH₂(CH₂)₆NH₂
Hazard Info: Corrosive
Density (g/mL): 0.854
Boiling Point (°C): 205
Freezing Point (°C): 39-42
Solubility: Water and Slightly in Alcohol
Synonyms: Hexamethyleneediamine, 1,6-Diaminohexane
Shelf Life (months): 36
Storage: White

Provides a complete set of visual, digital and hands-on resources designed to support teacher instruction and provide students with the skills to master key concepts on the Sun, Earth and Moon.

Take your study of pulleys and engineering to the next level!

CAS Number: 1718-34-9
Formula Weight: 309.22
Formula: C₁₃H₈N₃O₅Na
Hazard Info: Irritant
Density (g/mL): >1
Boiling Point (°C): Decomposes
Freezing Point (°C): 250
Solubility: Many Organic Solvents, Hot Methyl Alcohol and Water
Synonyms: Mordant Yellow 3R, C.I. No. 14095
Shelf Life (months): 36
Storage: Green

CAS Number: 7789-09-5
Formula Weight: 252.06
Formula: (NH₄)₂Cr₂O₇
Hazard Info: Oxidizer, Flammable, Toxic, Irritant
Density (g/mL): 2.15
Freezing Point (°C): 170
Solubility: Water and Alcohol
Synonyms: Ammonium Bichromate, Dichromic Acid Diammonium Salt, Diammonium Dichromate(VI)
Shelf Life (months): 12
Storage: Yellow

Bandit™ is a safe and low-cost STEM activity kit students can use to build and run a working electrophoresis system.

Accurate and easy measurement of a solution's conductivity or its total ion concentration.