$18.99
关于
1 Use a spoon to place the measured amounts of iron powder and sulfur powder into separate beakers. 2 Shake the powders in Beaker A and Beaker B. 3 Place Beaker A on a stand and heat it using a torch. 4 Bring a magnet close to each beaker and observe the results. 5 Add hydrochloric acid to each beaker and observe the results. 6 Answer the quiz based on the results of the experiment.
支持的平台
相关游戏
免费
免费
–26 % $10.99 $14.99
免费