初三科学：上册第三章活动3镁条燃烧
Quiz by CHEW HOCK LEONG周福隆
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Measure skills
from any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
With a free account, teachers can
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
4 questions
Show answers
- Q1影片中，用砂纸打磨之前的镁条是什么颜色的？有无光泽？无光泽，灰色有光泽，蓝色无光泽，黑色有光泽，红色Video30s
- Q2若要燃烧镁条，为何要用砂纸打磨镁条？没有意义，其实可以不用打磨摩擦生热，用摩擦热点燃镁条老师太闲空去掉镁条表面已经氧化的氧化镁，露出金属镁，更容易被点燃30s
- Q3实验影片中，镁条在空气中燃烧，发出什么颜色的光？白色紫色黄色蓝色Video30s
- Q4实验影片中，镁与氧气反应后的生成物是什么颜色的？白色蓝色红色黑色Video30s