论文部分内容阅读
二、实验步骤 1.检验氢气的纯度。 2.向铺有氧化铜的试管内通一会儿氢气。 3.去掉止水夹,点燃氢气。 4.待黑色的氧化铜变成光亮的红色时,夹上止水夹,熄灭火焰。
Second, the experimental steps 1. Test the purity of hydrogen. 2. Pass hydrogen gas into the tube with copper oxide for a while. 3. Remove the water stop clip and ignite hydrogen. 4. When the black copper oxide becomes a bright red, clamp the water stop clip and extinguish the flame.