"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 4 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Simple Calculation Usin... | 22150次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 4 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 4, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 4
Review questions:
1. Do you know the meaning of chemical equations?
(1), indicating the reactants, products and reaction conditions.
(2), represents the ratio of the number of particles between reactants and products.
(3), represents the mass ratio between reactants and products.
Summarize the rules:
In a chemical reaction, the mass ratio between reactants and products is related to _____.
Therefore, using this proportional relationship, the mass of one reactant (or product) can be used to calculate the mass of another product (or reactant) according to the chemical equation.
Notes on calculations based on chemical equations:
(1) Do not bring units when assuming unknown quantities
(2) Write the chemical equation correctly (pay attention to balance)
(3) Write the relative molecular mass, known quantity, and unknown quantity of the relevant substance (write it directly below the corresponding chemical formula. Write the relative molecular mass first. Be sure to multiply the relative molecular mass by the coefficient in front of the chemical formula, and then write the mass. ;The mass unit must be written and unified.)
(4) List the proportional formula and solve it (the calculation results are carried out according to the requirements in the question. If there is no requirement in the question and the division cannot be completed, keep one decimal place)
(5) Write the answer concisely
2. If the mass of the product is known, find the mass of the reactant.
Example 2: In industry, quicklime (CaO) and carbon dioxide can be produced by calcining limestone (CaCO3) at high temperature. If 10 tons of calcium oxide is to be produced, how many tons of calcium carbonate are needed?
Exercise 3: After adding manganese dioxide to the solution of "green oxidant" hydrogen peroxide (H2O2), a large amount of oxygen can be produced at room temperature. How many grams of pure hydrogen peroxide will be consumed to produce 48g of oxygen?
3. Calculation of impure reactants or products.
1. In the chemical reaction equation, whether it is a reactant or a product, the mass of the pure substance is substituted. If you encounter impure reactants or products, the impure substance should be converted into the mass of the pure substance.
2. Conversion between the mass of impure substances and pure substances.
Mass of pure substance = Mass of impure substance × Purity (mass fraction)
Summary: Things to note when calculating chemical equations
【Three essentials】
(1) The steps must be complete (assume, write, calculate, mark, list, solve, and answer);
(2) The format must be standardized;
(3) The units must be unified and the calculations must be accurate (usually 1 decimal place is retained);
【Three keys】
(1) Write chemical equations accurately;
(2) Accurately calculate relative molecular mass;
(3) The quantities substituted refer to the mass of the pure substance (the unit must be substituted into the calculation process);
Four types of calculations based on chemical equations
1. Find the mass of the product if the mass of the reactants is known.
2. If the mass of the product is known, find the mass of the reactant.
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.
Class exercises
1. Hydrogen burns in chlorine to form hydrogen chloride gas. How many grams of chlorine are needed to burn 100g of hydrogen? How many grams of hydrogen chloride gas are produced? (Cl-35.5)
2. Use hydrogen to reduce copper oxide to produce copper in the laboratory. If 3.0g of copper is produced, what mass of copper oxide is required?
3. Zinc reacts with hydrochloric acid (HCl) to produce hydrogen gas and zinc chloride. If 3.7g of zinc is reacted with a sufficient amount of hydrochloric acid in the laboratory, what is the mass of hydrogen and zinc chloride that can be produced? (Zn-65, Cl-35.5)
Communication and expression:
After studying this course, what have you learned and inspired?
1. In chemical equations, if you know the mass of the reactant (or product), you can use the mass ratio between substances to calculate the mass of the product (or reactant).
2. The calculation format using chemical equations must be standardized.
3. The calculation of chemical equations can enhance production planning and facilitate the rational use of resources.
Keywords: chemical equation teaching courseware, simple calculation teaching courseware using chemical equations, PPT courseware download for the first volume of the ninth grade chemistry of the People's Education Edition, downloading the ninth grade chemistry slide courseware, downloading chemical equation PPT courseware, simple calculation using chemical equation PPT courseware Download, .PPT format;
For more information about the "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 Courseware 7:
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 7 Review Questions Take the combustion of magnesium in air as an example to illustrate one of the meanings of chemical equations. The mass ratio between the reactants and products in the combustion reaction of magnesium in air 1. The mass of the known reactants...
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 6:
"Simple Calculations Using Chemical Equations" Chemical Equations PPT Courseware 6 Learning Objectives 1. Further understand the meaning of chemical equations, and be able to perform simple calculations based on correctly writing chemical equations. 2. Master the ideas and rules for calculating chemical equations..
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 5:
"Simple Calculation Using Chemical Equations" Chemical Equations PPT Courseware 5 Learning Objectives 1. On the basis of understanding the meaning of chemical equations, master the calculation of the mass of reactants and products. 2. Master the calculation of chemical equations through relevant chemical equation calculations..