Experimental equipment.1. wax candle 2. the platters/trays 3. glass or glass that is taller than the candles.4. the matches or lighters. 5. food colors to see the trial results have been obvious.
Experimental apparatus 1. Candles 2. plate / dish 3. glass or glass with a higher candle. 4. Matches or lighters 5. food coloring to make the results more clearly.
. Experimental equipment 1 candle 2 plate / tray 3. Glass bottle or glass with a height of over Tian 4. Matches or lighters. 5. Food coloring to see the results clearly