Thermochromism

The way in which light is absorbed or reflected by a crystalline material is determined by the structure of the crystal. This crystal structure can be changed by the application of heat. In some cases this change is reversible and the original structure, and therefore, the original color, returns upon cooling. Two compounds are formed when metal salts are reacted with [HgI4]2- Ion. Each compound is heated on a hotplate and a change in color is noted. The initial color of the compound returns upon cooling.

Kit includes:

• Mercury (II) Chloride UN1624 - 25 g x 3 Bottles
• Potassium Iodide - 25 g x 3 Bottles
• Silver Nitrate UN1493 - 15 g x 1 Bottle
• Copper (II) Chloride, Anhydrous UN2802 - 25 g x 2 Bottles

Materials needed but not supplied:

• (# 6131-4) Beaker 250 ml - 15 pcs
• (# 6138-2) Erlenmeyer Flask 100 ml - 30 pcs
• (# 6138-5) Erlenmeyer Flask 250 ml - 30 pcs
• (# 5445-3) Funnels & (# 6201-6) Filter Paper - 30 pcs
• (# 3071-30) Hot Plates - 15 pcs

DOT: Small quantity exemption 173.4. This package conforms to 49 CFR 173.4 for domestic highway or rail transport only

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This product will only be shipped to Schools, Universities, or Companies. If you are an individual ordering this product, it will not be shipped to you. It will be deleted from your order and the rest of the order will be shipped without your confirmation. Please make sure you give a commercial address and not a residential address.

This product may be shipped directly from the manufacturer and can arrive in a separate shipment. There can be a delay if the manufacturer does not have this item in stock.

If this product contains Chemicals, it can only be shipped via Ground. Please do not select any other shipping method. It will delay your order.

RETURNS NOT ACCEPTED: To ensure no contamination, we have a NO RETURN policy for this product. Absolutely NO RETURNS even if the box / container is unopened.