"Dissolution Phenomenon Between Liquids" Dissolution PPT Download

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"Dissolution Phenomenon Between Liquids" Dissolution PPT Download

Part 1: Can glue shampoo dissolve in water?

1. Observe the dissolution of glue and shampoo in water

Purpose of the experiment: Comparatively observe and describe the dissolution processes of glue and shampoo in water by putting glue and shampoo into water respectively.

Experimental materials: 2 beakers, 1 bottle of glue, 1 bottle of shampoo, 2 stirring rods

Experimental steps:

(1) Take a small spoonful of shampoo and slowly pour it into a glass filled with water.

(2) Observe how the shampoo enters the water. Do they float or sink in water? As the liquids in the cup sit still, observe how they spread through the water.

(3) Stir gently with a stirring rod, observe what changes occur in the two beakers, and record the observed phenomena?

(4) Stir thoroughly with a stirring rod and observe whether they are dissolved in the water.

(5) Record the dissolution process of glue and shampoo in water in the experiment record sheet.

Dissolution phenomenon between liquids PPT, part 2: Can vinegar, alcohol and cooking oil dissolve in water?

1. Dissolution experiment on how vinegar, alcohol and cooking oil can be dissolved in water

Purpose of the experiment: Observe and describe the dissolution of vinegar, alcohol and cooking oil in water.

Experimental materials: 1 small bottle of vinegar, 1 small bottle of alcohol, 1 small bottle of cooking oil, 3 test tubes filled with water, and 1 test tube rack.

Experimental steps:

(1) First, put about 10-15 ml of water in each of the three test tubes.

(2) Add 1-2 ml of vinegar, alcohol and cooking oil to the test tube respectively.

(3) After sufficient shaking, let it sit for a while.

(4) Observe and describe the changes of these three substances in water.

(5) Describe the experimental process and write down the observed phenomena.

Distinguish between dissolved and insoluble liquids

(1) Vinegar and alcohol quickly diffuse into the water and dissolve in the water.

(2) Glue and shampoo first sink to the bottom of the water, then slowly spread, and then slowly dissolve after stirring. It is difficult for glue and shampoo to form a uniform solution without stirring or shaking.

(3) Edible oil floats on the water and cannot be dissolved in water, but edible oil can be dissolved in detergent.

dissolution between liquids

A liquid is evenly distributed in another liquid and is dissolved if it is left to stand for a period of time and does not appear to separate like cooking oil in water.

Dissolution phenomenon between liquids PPT, Part 3 content: Classroom exercises

1. Fill in the blanks

1. Add cooking oil to water. The cooking oil will ___________, which means that the cooking oil ___________ dissolves in the water.

2. There is a ____________ phenomenon in liquids in water. If vinegar is poured into water, the vinegar will ____________.

3. When glue or shampoo enters the water, first _______________ and then _______________, stir thoroughly and then turn into glue or shampoo solution.

2. Multiple choice questions

1. Put the four commonly used condiments in the household into water. The ones that cannot form a solution are ( )

A. Vinegar B. Sucrose C. Peanut oil

2. ( ) will sink to the bottom if poured into water

A Glue B Alcohol C Edible oil

3. In daily life, we often use detergents to wash dishes, which is the use of ( )

A. Detergent can be dissolved in water. B. Oil can be dissolved in water.

C Oil stains can be dissolved in detergent

4. Add a few drops of water to the oil and the water will ( ).

A floats on oil and cannot be dissolved in oil

B sinks to the bottom of the oil and cannot be dissolved in the oil

C dissolves in oil

5. If a substance dissolves in water, it must be ( ) in the water.

A Uneven B Even C More at the top and less at the bottom

Dissolution phenomenon between liquids PPT, Part 4 content: Class summary

1. Glue or shampoo enters the water state: first float on the water, then sink, and then spread wisps, stir gently to partially dissolve, fully stir to fully dissolve, and finally become a glue or shampoo solution. Add edible oil to water. The edible oil will float, which means that the edible oil is not dissolved in water. Add a small amount of dishwashing liquid to the mixture of edible oil and water. After shaking, the edible oil dissolves, which means that the edible oil is dissolved in the dishwashing liquid. .

2. Salt, baking soda, potassium permanganate, glue, shampoo, vinegar, and alcohol can all be dissolved in water, forming a transparent and stable solution. Sand, flour, and cooking oil cannot be dissolved in water, forming a mixture. .

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Update Time: 2024-11-22

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