"Ward's Science"

Learn how to determine density and displacement.

CAS Number: 1308-38-9
Formula Weight: 152.02
Formula: Cr₂O₃
Hazard Info: Toxic
Density (g/mL): 5.1
Boiling Point (°C): 4000
Freezing Point (°C):

Learn about the different pigments in plant material and how chromatography can help to separate molecules in a mixture.

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

Learn about how to test for the presence of blood on materials.

CAS Number: 75-09-2
Formula Weight: 84.93
Formula: CH2Cl2
Hazard Info: Suspected Human Carcinogen
Boiling Point (°C): 40
Freezing Point (°C): -95
Solubility: Alcohol
Synonyms: Dichloromethane
Shelf Life (months): 36
Storage: Blue

CAS Number: 7775-11-3
Formula Weight: 161.99
Formula: Na2CrO4
Hazard Info: Toxic
Density (g/mL): 2.723
Freezing Point (°C): 792
Solubility: Water and Alcohol
Synonyms: Disodium Chromate(VI), Chromate of Soda
Shelf Life (months): 36
Storage: Blue

This kit has been designed to introduce students to the field of document analysis. Experiments in this kit cover the areas of paper analysis, hand writing analysis, detection of a forgery, recovery of mechanical/chemical erasures, hidden message discovery and ink analysis. Students will make use of techniques like microscopy, chromatography and fuming to complete the activities. Kit contains 10 unique sets of materials for 10 groups. Teacher’s Manual and Student Study Guide copymasters are included.

Demonstrate photosynthesis and respiration in action with our ready-made algae beads.

Prepare for upcoming competitions with this practice kit, the only kits officially licensed and approved by Science Olympiad!

Demonstrates the Effects of Acid Rain

Meets AP Science Practices 1, 2, 4, 5, and 6

An ideal solvent for histological fixation and dehydration.

Hands On Science For Elementary Students!

Demonstrate the concepts of Indicators and Acids and Bases!

CAS Number: 7789-12-0
Formula Weight: 298.05
Formula: Na2Cr2O7·2H2O
Hazard Info: Toxic, Corrosive
Density (g/mL): 2.348
Solubility: Water
Synonyms: Sodium Bichromate
Shelf Life (months): 12
Storage: Blue