"Related Calculations in Chemical Reactions" Quantitative Study of Chemical Reactions PPT Download

Description

"Relevant Calculations in Chemical Reactions" Quantitative Study of Chemical Reactions PPT download, 18 pages in total.

learning target

1. Understand the basis for calculations based on chemical equations;

2. Master the calculation steps and writing format based on chemical equations;

3. Ability to calculate reactants and products based on chemical equations.

new knowledge learning

【think】

1. What is the ideal vehicle fuel in the future?

2. How do we produce hydrogen now?

Chemical equations not only indicate the reactants, products and reaction conditions, but also express the mass relationship between each substance through the relative molecular mass, that is, the mass ratio between each substance.

Steps and methods for calculation using chemical equations:

(1) Assume unknown quantities;

(2) Write the chemical equation of the reaction;

(3) Find the relationship between known quantities and unknown quantities;

(4) List the proportional formulas and solve them;

(5) Write the answer concisely;

(6) Review and inspection.

Classic examples

Knowledge point: simple calculations using chemical equations

1. Aluminum burns in oxygen to form alumina. In this reaction, the mass ratio of aluminum, oxygen, and alumina is ( )

A.27:32:102 B.27:24:43

C.4:3:2 D.108:96:204

2. Complete electrolysis of 18g water can produce ( )g oxygen and ( )g hydrogen.

A.2g B.4g

C.8g D.16g

Keywords: free download of PPT courseware for the eighth grade of Chemistry in the May 4th System of Lujiao Edition, download of PPT related calculations in chemical reactions, download of PPT of quantitative research on chemical reactions, .PPT format;

For more information about the "Quantitative Study of Chemical Reactions and Relevant Calculations in Chemical Reactions" PPT courseware, please click the "Quantitative Study of Chemical Reactions PPT Relevant Calculations in Chemical Reactions" PPT courseware.

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Update Time: 2024-11-16

This template belongs to Chemistry courseware Lu Jiao Edition Ninth Grade Chemistry Volume 1 industry PPT template

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