Experimental principle of edelweiss in grade three

Experimental principle: add borax to hot water to saturate it. When water cools, borax will precipitate in the form of crystals. This phenomenon is called crystallization.

Experimental equipment: borax, hot water, wooden sticks, twisted sticks, iron wires, chopsticks, scissors and spoons.

Experimental steps: cut the torsion bar into three sections with the same length. Cross the cut torsion bars into snowflakes and fix them with thin iron wires. Pour a cup of hot water, then add borax. Stir with chopsticks until borax no longer dissolves. Soak snowflakes in hot water containing borax.