"How substances dissolve in water" Dissolution PPT courseware 3

Description

"How substances dissolve in water" Dissolution PPT courseware 3

learning target

1. Observe and describe the dissolution process of potassium permanganate in water, imagine the dissolution process of table salt, and understand how substances dissolve in water. (main difficulty)

2. Recognize the importance of careful observation and comparison.

Issues that should be paid attention to during the test

1. Do not touch the potassium permanganate with your hands when taking it; and gently put the potassium permanganate into the water.

2. When observing, pay attention to any changes in potassium permanganate (whether particles are seen, whether the distribution is uniform, and whether there is precipitation); and what changes are in the water.

Collaborative research two

Task Understand the dissolution process of different substances in water.

method

1. Experiment: Dissolution process of flour, sand and salt

2. Discuss, communicate and summarize

3. Homework: P26

Talk about your gains!

Through observation, we know that dissolution means that substances are uniformly and stably dispersed in water without settling on their own, and the substances in the solution cannot be separated by filtration.

practice

1. Table salt will turn into ( ) particles in water and will be distributed ( ) in the water. It will not ( ) and cannot be separated by ( ) method.

2. Flour ( ) is dissolved in water, and potassium permanganate ( ) is dissolved in water.

3. Think about it, what other things in our lives do you know that can be dissolved in water?

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For more information about the PPT courseware "How Dissolved Substances Dissolve in Water", please click on the ppt tag of "How Dissolved Substances Dissolve in Water" ppt.

"How substances dissolve in water" Dissolution PPT:

"How Substances Dissolve in Water" Dissolution PPT Part One: Dissolution of Potassium Permanganate 1. Understand Potassium Permanganate Appearance: Dark purple slender rhombic columnar crystals with a blue metallic luster. Properties: Easily soluble in water, unstable in aqueous solution. Contact with skin can...

"How substances dissolve in water" Dissolution PPT courseware 4:

"How Substances Dissolve in Water" Dissolution PPT Courseware 4 Salt dissolved in water! How does table salt dissolve in water? Want to see the dissolution process of substances with your own eyes? I found a friend for everyone who can fulfill everyone's wishes. Its name is potassium permanganate..

"How substances dissolve in water" Dissolution PPT courseware 2:

"How substances dissolve in water" Dissolution PPT courseware 2 Salt dissolved in water! How does table salt dissolve in water? Chemical name: Potassium permanganate, dark purple slender rhombic columnar crystal with blue metallic luster. Easily soluble in water, the solution is unstable. Encounter..

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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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