【人教版】Junior High Chemistry Grade 9 Volume 2
This course covers the core content of the second semester of Grade 9 Chemistry in junior high school, including the properties and uses of metal materials, the formation and properties of solutions, chemical reactions of acids and bases, the application of salts and chemical fertilizers, as well as the close connection between chemistry and daily life. The course emphasizes experimental inquiry and the integration of theory with practice.
Course Overview
Content Summary
This course covers the core content of the second semester of Grade 9 Chemistry, including the properties and uses of metallic materials, the formation and properties of solutions, the chemical reactions of acids and bases, the application of salts and chemical fertilizers, and the close relationship between chemistry and daily life. The course emphasizes experimental inquiry and the connection between theory and practice.
Explore the mysteries of substances, appreciate the charm of chemistry, and build scientific literacy.
Author: Wang Jing, Zheng Changlong
Acknowledgments: Published by People's Education Press, compiled by the Chemistry Curriculum Textbook Research and Development Center of the Curriculum Textbook Research Institute.
Learning Objectives
- Understand the physical properties of common metals, recognize the definition of alloys and their excellent properties (e.g., titanium alloys and shape memory alloys).
- Master the patterns of reactions between metals and oxygen, acids, and certain salt solutions; be able to identify displacement reactions and apply the activity series of metals to solve problems.
- Understand the principles of iron smelting (hematite, magnetite), investigate the conditions for iron corrosion, and establish awareness of conserving metal resources.
- Master the concepts of solution, solute, and solvent; understand the transformation relationship between saturated and unsaturated solutions; memorize the definitions of solid and gas solubility.
- Be proficient in interpreting solubility curves, obtain substance solubility at different temperatures from graphs, and explain factors affecting seawater salt extraction and gas dissolution.
- Master calculations of solute mass fraction (including dilution and calculations combined with chemical equations), and independently complete the experiment of preparing a sodium chloride solution with a specific mass fraction.
- Be able to use acid-base indicators (litmus, phenolphthalein) to test the acidity or basicity of a solution.
- Master the main properties, uses, and safe operation procedures (e.g., diluting concentrated sulfuric acid) of hydrochloric acid, sulfuric acid, sodium hydroxide, and calcium hydroxide.
- Understand the essence of neutralization reactions (H^+ combining with OH^- to form water) and their applications in production and daily life.
- Be able to identify common salts in daily life, accurately describe their common names, and master the main uses of sodium chloride, sodium carbonate, sodium bicarbonate, and calcium carbonate.