"How substances dissolve in water" Dissolution PPT courseware 2

Description

"How substances dissolve in water" Dissolution PPT courseware 2

Table salt dissolves in water!

How does table salt dissolve in water?

Chemical name: Potassium permanganate

Dark purple slender rhombic columnar crystals with blue metallic luster.

Easily soluble in water, the solution is unstable. It decomposes when exposed to light, producing gray-black manganese dioxide that precipitates and adheres to the utensils.

Can be used as a disinfectant and bleach.

Can cause respiratory damage if inhaled. If it splashes into the eyes, it will irritate the conjunctiva and cause burns in severe cases. Irritation to skin. Concentrated solutions or crystals are corrosive to the skin and irritating to tissues, easily contaminating the skin and causing it to turn black.

Dissolution of potassium permanganate

Experimental equipment: beaker, water, glass rod, potassium permanganate, small spoon

Experimental operation:

In a beaker filled with water, gently put a few small grains of potassium permanganate. First wait and observe the dispersion of potassium permanganate in the water. Then gently stir the water with chopsticks and continue to observe the dispersion of the water and potassium permanganate. Variety.

Pay attention to observe:

Changes in potassium permanganate

water changes

What is this process?

The process of potassium permanganate from visible to invisible

The process of water changing from colorless to purple

The process of purple changing from thick to light

How to tell if a substance is dissolved in water?

Do you know what other substances can dissolve in water?

Do you want to do a dissolution experiment with other substances?

If you do, what are you going to do?

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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 3:

"How Substances Dissolve in Water" Dissolution PPT Courseware 3 Learning Objectives 1. Observe and describe the dissolution process of potassium permanganate in water, and imagine the dissolution process of salt to understand how substances dissolve in water. (Key points, difficulties) 2. Recognize careful observation...

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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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