"Chemical Properties of Metals" Metal PPT Courseware 3

Description

"Chemical Properties of Metals" Metal PPT Courseware 3

【teaching objectives】

1. Understand and master the chemical properties of metals.

2. Have a preliminary understanding of displacement reactions and be able to use displacement reactions to explain some related chemical problems.

3. Know the order of metal activity and be able to explain some phenomena related to daily life.

【Teaching focus】

Chemical properties of metals, metal activity sequence, displacement reactions

[Difficulties in Teaching]

Preliminary exploration of the chemical properties of metals, using metal activity sequences and substitution reactions to explain some related chemical issues

From the previous lesson, we already know

Metal has both general properties and characteristics. The use of a substance depends not only on its physical properties, but also on its chemical properties.

So, what are the chemical properties of metals?

【Think about it】

We have learned the reaction phenomena and chemical equations of iron, magnesium, copper and oxygen.

The iron wire burns violently in oxygen, causing sparks to emit, forming a black solid substance and releasing a large amount of heat.

When the magnesium ribbon burns, it emits dazzling white light, generates a white solid substance, and releases a large amount of heat.

Scene reconstruction

Discussion and communication: What did you discover or gain from your research?

1. ____________ can react with dilute hydrochloric acid to release hydrogen gas, but _____ cannot.

2. Iron, magnesium and zinc can react with dilute hydrochloric acid or dilute sulfuric acid with different degrees of severity. _____ reacted most violently, followed by _____, then ____.

Mg＞Zn＞Fe＞(H)＞Cu

[Reaction of metals with dilute hydrochloric acid (or dilute sulfuric acid)]

2Al+6HCl==2AlCl3+3H2↑ 2Al+3H2SO4==Al2(SO4)3+3 H2↑

The reaction is violent, a large number of bubbles are produced, and the solution remains colorless.

Fe+2HCl==FeCl2+ H2↑ Fe+H2SO4==FeSO4+H2↑

The reaction is slow, bubbles are generated, and the solution turns from colorless to light green.

① The reaction of aluminum iron with dilute hydrochloric acid (or dilute sulfuric acid), while copper does not react with dilute hydrochloric acid (or dilute sulfuric acid), shows that the metal activity of aluminum iron is stronger than that of copper. They can replace hydrogen in the acid and are active metals.

② When iron reacts with dilute hydrochloric acid (or dilute sulfuric acid), a +2-valent iron compound is formed, which is pronounced as "ferrous iron" when named. The name of FeCl2 is ferrous chloride, and the name of FeSO4 is ferrous sulfate. Their solutions are all shallow. green

Displacement reaction:

(1) Definition: The reaction in which one element reacts with one compound to produce another element and another compound is called a displacement reaction.

(2) The substitution reaction can be represented by letters: A+BC==B+AC

Charcoal reduction of copper oxide: C+2CuO==2Cu+CO2↑

Hydrogen reduction of copper oxide: H2+CuO==Cu+H2O

Reaction of iron and hydrochloric acid: Fe+2HCl==FeCl2+ H2↑

Reaction of iron and copper sulfate: Fe+CuSO4==Cu+FeSO4

Magnesium burns in carbon dioxide: 2Mg+CO2==C+2MgO

These four reactions are all displacement reactions. It can be seen that the compounds participating in the reaction can be oxides, acids, salts, etc.

1. The widely circulated saying that true gold is not afraid of fire can fully reflect the properties of gold ( )

A. Low hardness B. High density

C.Good electrical conductivity D.Stable chemical properties

2. There are three metals: X, Y, and Z. If X and Y are immersed in dilute hydrochloric acid, Y will dissolve but The order of activity from strong to weak is ( )

A. Z, Y, X B. Y, X, Z

C.Z,X,Y D.Y,Z,X

3. A certain metal A can undergo a displacement reaction with a copper sulfate solution, but cannot react with a zinc chloride solution. The correct order of the metal activities of A, copper, and zinc from strong to weak is ()

A.Zn, A, Cu B.Zn, Cu, A

C.A, Zn, Cu D.Cu, A, Zn

Keywords: metal teaching courseware, chemical properties of metal teaching courseware, Guangdong Education Edition 9th grade chemistry PPT courseware download, second volume, 9th grade chemistry slide courseware download, metal PPT courseware download, chemical properties of metal PPT courseware download, .PPT format ;

For more information about the "Chemical Properties of Metals Metals" PPT courseware, please click the "Chemical Properties of Metals ppt Metal 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: 2024-10-19

This template belongs to Chemistry courseware Cantonese Education Edition Ninth Grade Chemistry Volume 2 industry PPT template

Preview