This superb bumper pack of resources contains equipment and materials necessary to complete reversible and irreversible changes. Demonstrate the differences between dissolve and melt using salt to dissolve in water and wax to melt with heat. Great for hands-on scientific enquiry. Contents include:Plaster of Paris 5kgIron Filings 500gWax 500gSalt 1kg Coal 500g6 Candles30 Night Lights10 Night Light Stands100 x Economy Test Tubes Rimmed 10 x751 Test Tube Rack10 x 100cm Glass Beakers10 Glass Stirrers5 -10 - 110°C School ThermometersPestle and Mortar1 000 Wooden Splints25 Metal Dishesa Stainless Steel Mixing Bowl.