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Authoritative PPT Summary
"Concentration of Solution" Solution PPT (Lesson 1), 20 pages in total.
Import new lesson
Common solutions in production and life (labels)
Alcohol content of wine
The concentration of white vinegar
learning target
1. Master the concept of mass fraction of solute in a solution;
2. Be able to calculate the mass fraction of the relevant solute.
Teach a new lesson
solution concentration
[Experiment 9-7] Add 0.1g, 0.5g, and 2g solid copper sulfate to each of the three test tubes, and then add 20mL of water respectively. Compare the colors of the three solutions.
For colored solutions, the depth of the color can determine whether the solution is concentrated or dilute. However, this method is relatively crude and cannot accurately indicate how much solute is contained in a certain amount of solution.
discuss
Judging the concentration of a solution by observing its color is only a rough method of judging the concentration of a solution.
We should learn from the way merchants introduce products to consumers by clearly indicating the composition of the solution. There are many ways to express the composition of a solution. Here we mainly understand the mass fraction of the solute.
Class summary
1. What is the mass fraction of solute?
2. The connection and difference between solute mass fraction and solubility:
At a certain temperature: the solute mass fraction of a saturated solution of a substance
Keywords: Free download of PPT courseware for the second volume of the ninth grade of Chemistry published by the People's Education Press, PPT download of the concentration of the solution, PPT download of the solution, .PPT format;
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"Concentration of Solution" Solution PPT (Lesson 2):
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"Concentration of Solution" Solution PPT Courseware 6:
"Concentration of Solution" Solution PPT Courseware 6 Concentrated Solution and Dilute Solution Correctly Understand Concentrated and Dilute Solutions Summary: For colored solutions, according to the color depth, you can distinguish whether the solution is concentrated or...
"Concentration of Solution" Solution PPT Courseware 5:
"Concentration of Solution" Solution PPT Courseware 5 1. Mass Fraction of Solute 1. Definition: The mass fraction of solute in a solution is the ratio of the mass of the solute to the mass of the solution. 2. Calculation formula: Mass fraction of solute = mass of solute/mass of solution 100% Mass fraction of solute and dissolution..