"Transformation of Matter" PPT (first lesson)

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"Transformation of Matter" PPT (first lesson)

Part One Content: Learning Objectives:

1. Know the transformation of non-metallic elements such as sulfur and carbon into their compounds, and know the treatment methods of sulfur dioxide tail gas.

2. Know the transformation of iron and other metal elements into their compounds.

Transformation of substances PPT, Part 2: Transformation between non-metals and their compounds

1. Reaction of sulfur and oxygen

①As shown in the picture, observe its appearance

② Ignite sulfur in the air and observe the phenomenon

③Ignite sulfur in oxygen and observe the phenomenon

Conclusion: 1. Non-metallic elements can be converted into corresponding compounds under certain conditions.

2. Mutual conversion of carbon dioxide and carbonic acid

① Blow air or CO2 into 1 cup of distilled water, and leave the other cup alone.

Add a few drops of purple litmus solution to 2 beakers

②Put a small amount of liquid from each of the two beakers into the test tube and heat it.

Conclusion: 2. Non-metal oxides can be converted into acids under certain conditions

3. Unstable acids regenerate non-metal oxides after thermal decomposition.

Transformation of substances PPT, Part 3: Transformation between metals and their compounds

Is the transformation of metal elements and their compounds similar to that of non-metals? Please give an example?

What conclusion can you draw from the above equation?

Elemental metal + oxygen == metal oxide

Conclusion: 4. Metal elements can be converted into corresponding compounds under certain conditions.

Transformation of matter PPT, Part 4: Metal and non-metal reactions

1. Mix a small amount of sulfur with iron powder, and use a magnet to approach the mixture

2. Put the mixture into the test tube and heat it with an alcohol lamp

3. Pour the product onto white paper and observe the appearance of the product. Use a magnet to approach the product. Can the magnet attract the product?

Why?

Transformation of Matter PPT, Part 5: Practice

1. The reliable way to distinguish between hydrogen, carbon monoxide and methane is based on their ---- ( )

A． Different combustion phenomena B. Combustion products are different

C. Different color and smell D. Different solubility

2. Under the catalytic action of cobalt tetraoxide (Co3O4) nanorods, CO in automobile exhaust reacts with O2 at low temperature to generate CO2.

Which of the following statements about this reaction is incorrect---- ( )

A． This reaction can reduce the pollution caused by automobile exhaust to the atmosphere

B. After the reaction, the valence of carbon decreases

C. In this reaction, the mass of Co3O4 remains unchanged before and after the reaction.

D. This reaction type is a chemical reaction

3. Summary and reflection are one of the important links in the learning process.

As shown in the picture, it is an illustration from a textbook, which is a lecture note taken by a certain student. Which of the following students made a mistake in summarizing the knowledge contained in the pictures during review---- ( )

A． This reaction is H2 + Cl2, which is a chemical reaction.

B. The mass ratio between reactants and products is 1:1:2

C. The product is easily soluble in water, and the pH of the resulting solution is <7

D. Combustion does not necessarily require oxygen, but there must be combustion-supporting substances, such as Cl2

Keywords: Zhejiang Education Edition ninth grade science PPT courseware free download, transformation of matter PPT download, .PPT format;

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Update Time: 2024-10-30

This template belongs to science courseware Zhejiang Education Edition Ninth Grade Science Volume 1 industry PPT template

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