hotline:020-29026320 |13903018415
List of 20 commonly used chemical experimental equipment
2024-10-12
2. Examination of basic skills and observation ability; (Use of instruments and basic operation of experiments); Preparation, inspection, collection, impurity removal, drying and property experiments of oxygen, carbon dioxide and unknown gases similar to their properties.
2, C, Fe, Cu, Fe2O3, CuO and other substances comprehensive application of the reduction reaction and metal activity of the inquiry.
3, CaO, Ca(OH)2, CaCO3, NaOH, Na2CO3 properties related to the inquiry.
4. The research on unknown objects or non-common substances in junior high schools mainly adopts the method of providing information to examine the ability to quickly extract effective information and use knowledge to answer questions. This type of question is more difficult.
Previous Page:
online message
Telephone:13903018415(Manager Wang)
Business: 020-29026320
E-mail:wangxueli@haiyoukj.com
Address: Rooms 1506-1507, Building 4, Chuangyue Times Cultural and Creative Park, No. 61 Xiannan Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province
Sweep code attention
