"Water Can Dissolve Some Substances" Dissolution PPT Courseware

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"Water Can Dissolve Some Substances" Dissolution PPT Courseware

Experiment on mixing salt, sand and water

1. Take a spoonful of salt and sand respectively, put them into two beakers containing the same amount of water, and observe their changes in the water.

2. Stir and observe the changes of salt and sand in the water.

3. Let it sit for a while and observe the changes of salt and sand in the water.

Experimental requirements:

1. Teams of four work together.

2. The experiment should be conducted quietly and quickly.

3. Complete the experiment record sheet.

Experiment on mixing flour and water

1. Take a spoonful of flour, put it into a beaker of water, and observe its changes in the water.

2. Stir and observe the changes of flour in water.

3. Let it sit for a while and observe the changes of flour in water.

Through filtering experiments, we know:

Substances dissolved in water cannot be separated by filtration;

Substances that are insoluble in water can be separated by filtration.

Dissolving characteristics:

1. Matter becomes particles invisible to the naked eye.

2. It will not precipitate after standing still.

3. Substances cannot be separated after filtration.

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For more information about the "Dissolved Water Can Dissolve Some Substances" PPT courseware, please click the Dissolved ppt Water Can Dissolve Some Substances ppt label.

"Water Can Dissolve Some Substances" Dissolution PPT Download:

"Water Can Dissolve Some Substances" Dissolution PPT Download Part 1 content: Table salt dissolved in water 1. Observe and describe the state of table salt in water Experimental equipment: beaker, small spoon, glass rod, table salt, water 1. Take a level spoon of salt, Place it in a beaker of water and observe. 2,..

"Water can dissolve some substances" Dissolution PPT:

"Water Can Dissolve Some Substances" Dissolution PPT Part 1 Content: Table salt is dissolved in water. Take a small spoonful of table salt, put it into a glass filled with water, and stir gently with a stirring rod. How to describe the state of table salt in water? Table salt is missing in the water. Table salt is missing in the water..

"Water Can Dissolve Some Substances" Dissolution PPT Courseware 4:

"Water Can Dissolve Some Substances" Dissolution PPT Courseware 4 1. What is dissolution? 2. Can you say a sentence or two using dissolution? Salt in water Experimental equipment: beaker, small spoon, glass rod, salt, water 1. Take a level spoon of salt and place it in the water in the beaker for observation. 2. Gently...

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Update Time: 2024-09-30

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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