"Chemical Properties of Metals" Metals and Metal Materials PPT Courseware 2

Description

"Chemical Properties of Metals" Metals and Metal Materials PPT Courseware 2

Courseware Instructions

1. There is a music switch in the lower right corner of the courseware cover.

2. The courseware has six parts, and the second part is divided into five small parts. At the end of each part, click to return to the navigation page.

3. The courseware uses two videos. Click (13th picture) "Video Reproduction 1" and (20th Picture) "Video Reproduction 2" to watch the videos.

learning target

1. Know the reaction and severity of magnesium, zinc, iron, copper and other metals with oxygen

2. Explore the reactions of different metals with dilute hydrochloric acid, dilute sulfuric acid and certain metal compound (salt) solutions

3. Preliminarily understand the order of activity of some common metals

Read Q&A

Question 1: Why don’t aluminum appliances need to be painted in daily life?

Answer: Aluminum can react with oxygen in the air to form a dense aluminum oxide film on the surface, thereby preventing the aluminum in the inner layer from being further oxidized. Therefore, the aluminum itself has good corrosion resistance and does not need to be painted.

Question 2: What does "real gold is not afraid of red furnace fire" mean?

Answer: This shows that gold cannot react with oxygen at high temperatures.

Research activity one

Reaction of metals with hydrochloric acid and sulfuric acid

Experimental steps:

Take a certain amount of magnesium, zinc, iron, and copper with particles of the same size as possible and put them into four test tubes respectively. Add 5 ml of dilute hydrochloric acid or dilute sulfuric acid to each. Place a burning small wooden strip at the mouth of the test tube to conduct a comparative experiment. Observe which metals can react with dilute hydrochloric acid and dilute sulfuric acid? What can't be done? How violent was the reaction? What happens to the color of the solution? Does it release heat? If gas is generated, determine what gas is generated?

Research activity two

Reactions between metals and solutions of certain compounds

Experimental steps:

1. Dip an aluminum wire polished with sandpaper into the copper chloride solution, take it out after a while, and observe.

2. Dip a clean copper wire into the silver nitrate solution, take it out after a while, and observe.

3. Dip another clean copper wire into the aluminum sulfate solution, take it out after a while, and observe.

Application of Metal Activity Sequence

1. In the order of metal mobility, the higher the metal is, the stronger its mobility.

2. In the order of metal activity, the metal located in front of hydrogen can displace the hydrogen in hydrochloric acid and dilute sulfuric acid.

3. In the sequence of metal activities, the metals at the front (except potassium, calcium, and sodium) can displace the metals at the back from the solution of their compounds.

Practice and consolidate

1. According to the order of metal activity, the following reactions can occur ( )

A. Ag and H2SO4 solution B. Fe and CuSO4 solution

C. Cu and AgCl D. Zn and NaCl solution

2. Dip the three metals X, Y and Z into dilute sulfuric acid respectively. Z will dissolve but X. Y will not dissolve. Dip X into the compound solution of Y and Y will precipitate on the surface of The order from weak to weak is ( )

A. Z>Y>X B. Y>Z>X

C. Z>X>Y D. Y>X>Z

Summary summary

chemical properties of metals

1. Most metals can react with oxygen, but the difficulty and intensity of the reaction vary.

2. Active metals can react with dilute hydrochloric acid and dilute sulfuric acid, but the difficulty and intensity of the reaction are different.

3. The metal in the front can react with the solution of the metal compound (salt) in the back.

4. The activity sequence of metals

K Ca Na Mg Al Zn Fe Sn Pb(H)Cu Hg Ag Pt Au

Metal activity gradually weakens from strong to strong

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For more information about the "Chemical Properties of Metals Metals and Metal Materials" PPT courseware, please click the "Chemical Properties of Metals ppt Metals and Metal Materials ppt" tag.

"Chemical Properties of Metals" PPT courseware:

"Chemical Properties of Metals" PPT courseware Part One: Chemical Properties of Metals Knowledge Review: What are the chemical properties of metals? Iron will rust, and zinc can react with hydrochloric acid to release hydrogen. These are the chemical properties of metals. ①The reaction between metal and oxygen..

"Chemical Properties of Metals" PPT (Lesson 3):

"Chemical Properties of Metals" PPT (Third Lesson) Part One Content: Teaching Objectives 1. Explore the causes of steel corrosion through experiments 2. Know the anti-rust methods... ... Chemical Properties of Metals PPT, Part 2: Common methods to prevent metal corrosion..

"Chemical Properties of Metals" PPT (second lesson):

"Chemical Properties of Metals" PPT (Second Lesson) Part One Content: Teaching Objectives: 1. Understand the activity sequence of metals through the reactions of typical metals with acids and certain salts; 2. Understand the characteristics of substitution reactions, and understand the behavior of electrons role in chemical reactions. ... ....

File Info

Update Time: 2024-09-09

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

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