"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT courseware

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"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT courseware

1. Think about it

Under the same conditions, different substances have greater or lesser solubility in water. So, how much is the ability of a substance to dissolve in water?

(1) Research questions

How many grams of salt can be dissolved in 100 ml of water?

(2) Preparation for research

Measuring cylinder, beaker, scale, spoon, stirring rod, salt, record sheet

(3) Research methods

Use a measuring cylinder to take 100 ml of water and pour it into the cup.

Use a scale to divide the table salt into two grams.

3. Do it

1. Use a measuring cylinder to take 100 ml of water.

2. Pour 100 ml of water into the beaker.

3. Use a scale to weigh the salt and divide it into 2 grams each. (20 copies)

4. Pour the divided 2 grams of salt into the beaker and stir.

4. Experiment summary

How many grams of salt can be dissolved in 100 ml of water?

Scientists have found through thousands of experiments that 100 ml of water can dissolve approximately 36 grams of salt.

What did you discover through this experiment?

A certain amount of water can only dissolve a certain amount of salt.

5. Expand experiments

If the temperature of the water is changed, how many grams of salt can be dissolved in 100 ml of water?

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"How many grams of salt can be dissolved in 100 ml of water" dissolving PPT:

"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT Part 1 Content: How many grams of salt can be dissolved in 100 ml of water 1. Experimental plan to study how many grams of salt can be dissolved in 100 ml of water Determine the question to be discussed: To study how much can be dissolved in a glass of water grams of table salt, must...

"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT courseware 4:

"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT courseware 4 Group discussion 1. How to conduct an experiment to study this problem? What should we pay attention to? 2. Is the same amount of salt dissolved in cups of different sizes? 3. When should the second spoonful of salt be added? No..

"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT Courseware 3:

"How many grams of salt can be dissolved in 100 ml of water" Dissolution PPT courseware 3 Observation and thinking 1. Add 1 teaspoon of salt to the beaker containing water, stir, what do you see? 2. If you add 1 teaspoon of salt and stir, will it still dissolve? 3. What will happen if you keep adding salt to this glass of water and stirring it...

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Update Time: 2024-11-18

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