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"Dissolution Phenomenon Between Liquids" Dissolution PPT Courseware 2
Solids such as table salt and potassium permanganate are dissolved in water. Form a uniform, transparent and stable solution.
Can liquids also dissolve in water like table salt and potassium permanganate?
Experimental requirements:
(1) Pour a spoonful of glue or shampoo into a glass filled with water and carefully observe how it enters the water and whether it floats or sinks in the water. Record how the glue or shampoo spreads when the cup sits quietly. Record your observations on Lab Sheet 1.
(2) After recording, stir it gently with a small stick. You will see what changes occur in the glue or shampoo. Record the phenomenon you observe on Experiment Sheet 1.
(3) Finally, stir thoroughly with a small stick. Is the glue or shampoo dissolved in the water?
Can vinegar, alcohol and cooking oil dissolve in water?
Put about 10-15 ml of water in each of the three test tubes.
Add 1-2 ml of vinegar, alcohol and cooking oil to the test tube respectively.
After shaking thoroughly, let it sit for a while.
Observe and describe the changes in these three substances in water.
Students in the group observe and record at the same time, and record them in Experiment Record Sheet 2.
think:
1. Compared with the dissolution of vinegar and alcohol, what are the characteristics of the state of edible oil in water? Can cooking oil dissolve in water?
2. Can we distinguish between dissolved or undissolved liquids?
Think about it:
What kind of dissolution phenomena have you seen between liquids in your life?
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"Dissolution Phenomenon Between Liquids" Dissolution PPT download:
"Dissolution Phenomenon Between Liquids" Dissolution PPT Download Part One Content: Can Glue Shampoo Dissolve in Water 1. Observe the dissolution of glue and shampoo in water Experimental purpose: By putting glue and shampoo into water respectively In water, compare and describe glue and...
"Dissolution Phenomenon Between Liquids" Dissolution PPT:
"Dissolution Phenomenon Between Liquids" Dissolution PPT Part 1: Can glue and shampoo dissolve in water? Certain solid substances dissolve in water and can form a uniform, transparent, and stable solution. Then, liquids can also dissolve in water like table salt and potassium permanganate.
"Dissolution Phenomenon Between Liquids" Dissolution PPT Courseware 3:
"Dissolution Phenomenon Between Liquids" Dissolution PPT Courseware 3 Can Shampoo Dissolve in Water? Guess: Can Shampoo Dissolve in Water? Take a small spoonful of shampoo and slowly pour it into a glass filled with water. Watch how the shampoo enters the water. They float in the water...