【Shanghai Edition】Junior High School Science Grade 9, Term 1
This textbook for Grade 9, Term 1 covers three major areas: Physical Science (minerals, metals, acids, bases, and salts), Life Science (nutrition, energy exchange, and substance transport), and Physical Energy (electric circuits, electricity, and magnetism), aiming to develop students' scientific inquiry skills and comprehensive competencies.
Course Overview
Content Summary
This textbook is for the first semester of Grade 9 Comprehensive Science, covering three major domains: Physical Sciences (minerals, metals, acids, bases, and salts), Life Sciences (nutrition, energy exchange, and substance transport), and Physical Energy (electric circuits, electricity, and magnetism). It aims to cultivate students' scientific inquiry abilities and comprehensive literacy.
An exploratory journey into the science of material transformation, life's mysteries, and energy flow.
Author: Hu Jiuhua, Liu Jian, Sui Shuguang
Acknowledgments: Approved by the Ministry of Education, 2013
Learning Objectives
- Be able to list physical properties of metals (such as electrical conductivity, thermal conductivity, malleability) and identify common alloys and their uses.
- Master the chemical principles of iron smelting (carbon monoxide reduction of iron oxide) and write related chemical equations.
- Understand and apply the law of conservation of mass to explain mass changes before and after chemical reactions, and perform simple chemical calculations.
- Memorization and Differentiation: Be able to list common acids, bases, and salts found in daily life; understand the properties of concentrated sulfuric acid (hygroscopicity, dehydrating ability) and proper dilution procedures.
- Pattern Recognition: Understand and write chemical equations for reactions between acids and metals/metals oxides/salts, and between bases and non-metal oxides/salts; grasp the concept of neutralization reactions.
- Experimental Inquiry: Be able to distinguish acidity and alkalinity using color indicators (e.g., litmus), and design simple experiments to identify substances.
- Understand the definition and conditions for double displacement reactions, and use solubility tables to determine whether such reactions occur.
- Identify common chemical fertilizers and master simple identification methods.
- Learn the principles, apparatus selection, collection methods, and confirmation of fullness for oxygen and carbon dioxide preparation in the laboratory.
- Identification and Summarization: Be able to list the six major nutrients in food and the seventh nutrient (dietary fiber), and explain their physiological functions in the human body.