"Chemical Fertilizer" Salt Fertilizer PPT Teaching Courseware

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"Chemical Fertilizer" Salt Fertilizer PPT teaching courseware, 41 pages in total.

new knowledge learning

Knowledge point 1: Introduction to chemical fertilizers

[Tips] (1) Compound fertilizer: refers to a chemical fertilizer that contains __________________ among the three nutritional elements of nitrogen, phosphorus and potassium. Such as KNO3, NH4H2PO4, etc.

(2) When judging whether a certain substance can be used as a fertilizer, it is not only necessary to see whether it contains nitrogen, phosphorus, and potassium elements, but also whether the substance is highly corrosive. Nitric acid, potassium hydroxide, etc. cannot be used as fertilizers.

Explore point 1 Types of chemical fertilizers

[Scenario Display]Shows several types of chemical fertilizers commonly used in life:

[Question Research]What are the types of chemical fertilizers? What is the basis for classification?

[Integrated improvement]Based on the types of nutrients contained in chemical fertilizers, chemical fertilizers are divided into the following types: nitrogen fertilizers (containing nitrogen elements), phosphate fertilizers (containing phosphorus elements), potassium fertilizers (containing potassium elements) and compound fertilizers. Fertilizer (containing two or three of the three elements nitrogen, phosphorus, and potassium at the same time). It is worth noting that nitrogen, nitrogen dioxide, nitric acid, potassium oxide, potassium hydroxide, etc. are highly corrosive or gases and are inconvenient to use. They cannot be used as fertilizers.

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Knowledge point 1 Types of chemical fertilizers

1. Among the following chemical fertilizers, the one that belongs to nitrogen fertilizer is ()

A. Ca3(PO4)2 B. KCl

C. K2SO4 D. NH4HCO3

2. Among the following chemical fertilizers, which one is a compound fertilizer? ()

A. NH4H2PO4 B. K2CO3

C. NH4HCO3 D. CO(NH2)2

Knowledge point 2: The role of chemical fertilizers

3. The chemical fertilizer that can not only make the stems and leaves of crops grow lush and the leaves are dark green, but also make the crops grow robustly is ()

A. NH4NO3 B. KNO3

C. CO(NH2)2 D． superphosphate

Keywords: Free download of PPT courseware for the second volume of the ninth grade chemistry of the People's Education Press, download of chemical fertilizer PPT, download of salt fertilizer PPT, .PPT format;

For more information about the "Salt Fertilizer and Chemical Fertilizer" PPT courseware, please click on the Salt Fertilizer PPT Chemical Fertilizer PPT tab.

"Chemical Fertilizer" Salt Fertilizer PPT Courseware (Lesson 2):

"Chemical Fertilizer" Salt Fertilizer PPT Courseware (Lesson 2), 13 pages in total. Classification practice of knowledge points 1. Among the following chemical fertilizers, the one that can be distinguished from other chemical fertilizers in terms of smell is ( ) A. Ammonium bicarbonate B. Ammonium nitrate C. Potassium sulfate D. Potassium chloride 2. Among the following four chemical fertilizer samples ..

"Chemical Fertilizer" Salt Fertilizer PPT Courseware (Lesson 1):

"Chemical Fertilizer" Salt Fertilizer PPT Courseware (Lesson 1), 12 pages in total. Classification of knowledge points Knowledge point 1 Chemical fertilizers 1. Scientific application of chemical fertilizers is an important means to increase agricultural production. The following are nitrogen fertilizers: ( ) A.K2CO3 B.Ca(H2PO4)2 C.NH4HCO3 D..

"Chemical Fertilizer" Salt PPT Courseware 3:

"Chemical Fertilizer" Salt PPT Courseware 3 Knowledge Review Knowledge Point 1 Definition and Types of Chemical Fertilizers 1. Definition of chemical fertilizers: _______________________________. 2. Fertilizers are divided into two categories: ___________ and ___________. 3. The most important chemical fertilizer_..

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Update Time: 2024-12-04

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 2 industry PPT template

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