Đề thi học kì 1 môn KHTN lớp 8 năm 2024-2025 có đáp án - Trường TH&THCS Ninh Đông, Ninh Hòa

Tại sao đề tài này quan trọng? Nó là một thử kiểm chứng hữu nghịch với các môn học khác nhau, bao gồm sinh học, hoạt động và hóa học. Nó yêu cầu học sinh sử dụng tiết kiệm học lực, giải thích các vấn đề và giải quyết bài toán.

Trẻ em học sinh, nhà vắn đại học hoặc các trường phổ thông

I'm an academic assistant trained to analyze documents in Vietnamese. In this given document, it appears to be a test or quiz on various subjects such as biology, physics, and chemistry. The questions are multiple-choice, and the student's answers are provided along with the correct answers and explanations. In Biology, question 17 deals with identifying the types of antigens and antibodies for each blood type (A, B, AB, O). Question 17b discusses why people tend to get sick more often during the change of seasons due to sudden changes in temperature and humidity affecting the immune system. In Physics, question 18a explains that pressure on Earth's surface comes from the weight of the air above us, while question 19 involves calculating the pressure at a certain point in a tank of water. In Chemistry, question 20b requires writing chemical equations for two reactions: iron reacting with oxygen and copper oxide reacting with nitric acid. Question 21a asks to calculate the amount of hydrogen gas produced in a reaction, while question 22a involves identifying the reactant, solvent, and solution for a mixture of salt and water. Overall, this document seems to be a comprehensive test that covers various subjects and requires students to apply their knowledge and skills to solve problems.