"Simple Calculation Using Chemical Equations" Chemical Equations PPT Download

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"Simple Calculations Using Chemical Equations" Chemical Equations PPT download, 15 pages in total.

Import new lesson

When a rocket is launched, if the fuel of the rocket is liquid hydrogen and the combustion accelerant is liquid oxygen, what reaction will occur during ignition? Write a chemical equation.

If the rocket takes off, it must carry at least 100kg of liquid hydrogen, and it must be fully burned to obtain sufficient energy. If you were the designer of the Long March series rocket thrusters, how many kilograms of liquid oxygen would you fill in the rocket combustion chamber to satisfy the complete combustion of the liquid hydrogen?

learning target

1. Know that the law of conservation of mass is the theoretical basis for calculations based on chemical equations. (emphasis)

2. Learn to use simple calculations of chemical equations and master the steps and formats of problem solving. (difficulty)

Teach a new lesson

Calculate based on chemical equation

How to use chemical equation calculations to solve practical problems, and what are the ideas for solving problems?

(1) Theoretical basis: Law of conservation of mass.

(2) The mass ratio between the reactants and products in the chemical equation.

Four types of chemical equation calculations:

1. Find the mass of the product if the mass of the reactants is known;

2. Find the mass of the reactants if the mass of the product is known;

3. If the mass of one reactant is known, find the mass of the other reactant;

4. If the mass of one product is known, find the mass of the other product.

In-class training

1. The basis for calculation using chemical equations is ( )

A. A chemical equation represents the process of a chemical reaction

B. The chemical equation represents the reactants, products and reaction conditions

C. The chemical equation represents the mass relationship between the reactants and products before and after the reaction.

D. In a chemical equation, the ratio of the masses of the reactants is equal to the ratio of the masses of the products.

2.8g oxygen is completely combined with sulfur to form sulfur dioxide, then the mass of sulfur participating in the reaction is ()

A.8g B.12g

C.16g D.4g

3. In order to detect the calcium carbonate content in limestone, students in a chemistry interest group used 6g of limestone sample (the main component is CaCO3, impurities do not participate in the reaction) and 19g of dilute hydrochloric acid (HCl) to react completely in the laboratory (the reaction product is CaCl2, water and carbon dioxide), the mass of the residual substance is measured to be 22.8g, find:

(1) According to the law of conservation of mass, how many grams of carbon dioxide are produced?

(2) How many grams of calcium carbonate are contained in the sample?

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For more information about "Chemical Equations Simple Calculations Using Chemical Equations" PPT courseware, please click on the Chemical Equations PPT Simple Calculations Using Chemical Equations PPT tag.

"Simple Calculation Using Chemical Equations" Chemical Equations PPT teaching courseware:

"Simple Calculations Using Chemical Equations" Chemical Equations PPT teaching courseware, 13 pages in total. New Lesson Introduction Hydrogen is the ideal fuel for future cars. 1kg of hydrogen can power a car with a power of 50kW to run about 100km. Water is the source of life, find the right catalyst..

"Simple Calculations Using Chemical Equations" Chemical Equations PPT (Lesson 2):

"Simple Calculations Using Chemical Equations" Chemical Equations PPT (Lesson 2), 22 pages in total. Learning Objectives 1. Through practice, be able to skillfully perform simple calculations of chemical equations. 2. Through communication and discussion, be able to use mass conservation to conduct comprehensive calculations of chemical equations..

"Simple calculations using chemical equations" Chemical Equations PPT (Lesson 1):

"Simple Calculations Using Chemical Equations" Chemical Equations PPT, 14 pages in total. Learning Objectives 1. Through self-study textbook example 1, summarize and describe the problem-solving steps and formats calculated based on chemical equations as well as calculation precautions; 2. When writing chemical reactions correctly..

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Update Time: 2024-10-02

This template belongs to Chemistry courseware People's Education Press Ninth Grade Chemistry Volume 1 industry PPT template

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