Summer vacation chemistry study plan

First, review and preview according to the plan.

First week review: chemical symbols

1. Review common element symbols; review the valence of common elements.

2. According to the valence price, the chemical formula of common substances can be written.

3. It will represent the chemical equations mentioned in the textbook.

The second week of preparation: the acid and alkali in the first section of the first unit of the ninth grade

1. The color change of the acid-base indicator in different acid-base environments.

2. The definition of acid and base, the reason why the solution is acidic and alkaline.

3, the relationship between pH and the acidity and alkalinity of the solution, the pH of the solution will be checked by pH test paper.

The third week of preparation: the second phase of the first unit of the ninth grade

1. Definition and substance of neutralization reaction and definition of salt.

2. The change in pH of the solution during the reaction between acid and base.

3. The actual application of the neutralization reaction.

The fourth week of preparation: the nature of acid and alkali in the third section of the first unit of the ninth grade

1, acid and alkali corrosion

2. The chemical properties of common acids and bases.

3. The definition of the metathesis reaction and the conditions under which the metathesis reaction occurs.

Week 5 Preview: Chemistry in the first section of the second unit of the ninth grade

1. Chemical substances in sea water, magnesium in sea water.

2. "Combustible ice" and "manganese nodules".

3. Seawater desalination technology.

Week 6 Preview: The second quarter of the ninth grade, the second section of the sea water "sun salt"

1. The process of sea salt "baking salt" - evaporation crystallization.

2. Distinguish and transform between saturated solution and unsaturated solution.

3. Solubility and solubility curve of solids, cooling and crystallization.

4. Each step of crude salt purification.

The seventh week of preparation: the second unit of the ninth grade, the third section of the sea water "base"

1. The simple principle and main process of soda ash production by ammonia-alkali process.

2. The nature and use of soda ash.

3. The water solubility law of salt.

Week 8 summary holiday study

Organize the holiday learning content, implement the basic knowledge of memory, and organize the preview notes.

Requirements: 1. Complete the review and preparation tasks according to the plan, and review the review, preview notes, and start the examination.

2. Pay attention to reading the textbooks during the preparation, and complete the exercises involved in the "online test" and "challenge yourself".

Second, social survey and scientific papers

1. "Energy conservation, work in the present, and benefit in the future. Nowadays, the development of a conservation-oriented society has become an important issue. Energy conservation has become fashionable. We will be willing to work hand in hand with everyone, with one heart and one mind, with practical actions, to save energy by the side. At the beginning, the comprehensive campaign for energy conservation and security was launched." Please combine your knowledge and survey to talk about the concept of "energy saving and emission reduction".

2. "We only have one earth", to protect the environment, everyone is responsible, combined with "the city to build a civilized city", starting from environmental protection, launching a social survey, and writing your views into a thesis.