"Transformation of Matter" Classification and Transformation of Matter PPT Download

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"Transformation of Matter" Classification and Transformation of Matter PPT Download

Part One: Literacy Goals

1. By reviewing the reactions between acids, bases, salts and different types of substances, summarize the main chemical properties and reaction types of acids, bases and salts, and cultivate the concept of change and evidence reasoning ability.

2. Based on the composition and properties of substances, master the laws and methods of transformation between substances, and enhance the ability to apply the concept of change.

3. Based on factors such as raw material sources, costs, and equipment requirements, understand the preparation methods of substances in industrial production, and cultivate scientific attitudes and social responsibilities.

PPT on the transformation of matter, part 2: independent preview before class

Preview of new knowledge

1. Chemical properties of acids, bases and salts

1.Acid

(1) The properties of acid

(2) The reason why acid has universal properties: all acid solutions contain H+.

【Micro Thought 1】Is the solution that can turn purple litmus red must be an acid solution?

Not sure. For example, NaHSO4 is an acid salt, and its solution is highly acidic, which can also turn purple litmus into red.

2.Alkali

(1) The properties of alkali

(2) The reason why alkali has universal properties: all alkaline solutions contain OH-.

3.Salt

(1) The properties of salt

(2) The reason why salts have certain properties: different salt solutions contain the same metal ions (or N) or acid ions.

[Micro Thought 2] Is soda ash an alkali?

Tip: Soda ash is the common name for sodium carbonate. It is not an alkali but a salt.

2. Transformation of matter

1. The basic basis for judging chemical changes in substances: atoms are recombined to form new substances; the types of elements do not change during chemical changes.

2. According to the composition and properties of substances, transformation between substances can be achieved through chemical changes.

3. The conversion relationship from elemental substance to salt can be expressed as:

4. Issues that need to be considered when preparing a certain substance in industrial production

In addition to considering the possibility of the reaction, factors such as the source of raw materials, cost and equipment requirements must also be considered.

For example, the main method used to prepare NaOH is electrolysis of saturated salt water. In the past, the reaction method of salt and alkali was also used, such as the reaction Ca(OH)2+Na2CO3=CaCO3↓+2NaOH. The reaction Na2O+H2O=2NaOH is generally not used. The reason The reason is that Na2O has few sources and high cost.

Autonomous testing

1. Judge whether it is right or wrong (mark “√” if it is correct and “×” if it is wrong).

(1) The red-hot iron wire burns violently in the air and sparks are emitted, producing black solid Fe3O4. ()

(2) Metal copper can undergo a displacement reaction with FeSO4 solution. ()

(3) CO2 can be produced by reacting dilute sulfuric acid or hydrochloric acid with massive limestone. ()

(4) CuO can undergo both displacement reaction and metathesis reaction. ()

(5) The metathesis reaction generates precipitate, gas and water at the same time. ()

(6) Only neutralization reaction can generate salt and water. ()

Answer(1)×　(2)×　(3)×　(4)√　(5)×　(6)×

2. (1) Write the corresponding substance name or chemical formula in the space in the table below, and indicate the category of the substance (element, oxide, acid, alkali, salt).

(2) Write the chemical equation of the following reaction and indicate the type of reaction:

① Reaction of dilute sulfuric acid and barium hydroxide solution: ____________________, __________.

②Reaction of dilute sulfuric acid and iron: ____________________, __________.

(2)①H2SO4+Ba(OH)2=BaSO4↓+2H2O metathesis reaction

②Fe+H2SO4=FeSO4+H2↑ Replacement reaction

Transformation of Matter PPT, Part 3: Inquiry and Learning in the Classroom

Explore

Interconversion between elements, oxides, acids, bases, and salts

Question exploration

1. Iron is a common metal. What types of substances can it react with?

Tip: Iron can react with oxygen, acids, and certain salts.

2. Sulfuric acid is a common acid. What types of substances can it react with?

It is suggested that sulfuric acid can react with active metals, metal oxides, bases and certain salts.

Deepen and expand

Transformation relationships between elements, oxides, acids, bases, and salts

(1) Chemical properties of metals

(2) The properties of oxides

(3) The properties of acid

(4) The properties of alkali

(5) The properties of salt

Transformation of substances PPT, part 4: in-class testing

1. It is known that there is a chemical reaction: H2+Cl2==2HCl. Which of the following statements is incorrect ()

A. The conversion type of substances involved in this reaction is element → compound

B. This reaction is a chemical reaction

C.HCl is an anaerobic acid

D. Liquid Cl2 is a mixture

AnswerD

Analyze liquid Cl2 as a pure substance.

2. Which of the following substances can directly react with other substances to form salts ()

①Metals ②Basic oxides ③Alkali ④Acidic oxides ⑤Acid

A.①②③ B.①④

C.②⑤ D.①②③④⑤

AnswerD

Analyze the reaction of metals, alkaline oxides, bases and acids to form salts; the reactions of acidic oxides, acids and bases to form salts.

3. For the chemical reaction A+B=C+D, which of the following statements is correct ()

A. If A and B are acids and bases, there may not necessarily be water in C and D.

B. If A and B are two compounds, then C and D must also be compounds.

C. If the products C and D are two kinds of precipitates respectively, then A and B may be salts and alkali

D. If one of the products C and D is a simple substance, then the reaction must be a displacement reaction

AnswerC

Analysis of item A, acid and alkali react to form salt and H2O; item B, CO reacts with CuO to form Cu and CO2; item D, CO reacts with CuO to form elemental Cu and CO2, but this reaction is not a displacement reaction.

Keywords: PPT courseware for high school chemistry compulsory course 1 from the People's Education Press is available for free download, transformation of matter PPT download, classification and transformation of matter PPT download, .PPT format;

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Update Time: 2024-06-28

This template belongs to Chemistry courseware People's Education Press High School Chemistry Compulsory Course I industry PPT template

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