"The Power of Cleaners" PPT

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Hunan Education Edition Sixth Grade Volume 2 Science, The Power of Cleaners PPT

Part One Contents: Cleaners

What methods can you use to get him clean quickly?

Not only that, the detergent has another "power"

Cleansers are so powerful!

detergent

Detergent is a cleaning product in a liquid state used for washing clothes, cleaning utensils, or cleaning furniture and other items. It uses a variety of new surfactants, which have strong detergency, easy rinsing, and no irritation to the skin. Best for washing kitchen utensils, furniture, fruits and vegetables.

The Power of Cleaners PPT, Part 2: The Dangers of Using Cleaners

Dangers of using detergents

Specifically, detergents mainly cause the following hazards:

1. Skin damage

Household cleaning chemicals such as laundry detergents, detergents, insecticides, toilet cleaners, etc. contain alkali, foaming agents, fatty acids, proteases and other organic substances. The acidic substances in them will absorb moisture from the skin tissue. In addition to coagulating the protein and alkali In addition to absorbing water, acidic substances can also denature tissue proteins and destroy cell membranes, and the damage is more serious than acidic substances. The cationic and anionic surfactants contained in detergents can remove the oily protective layer on the skin surface, thereby corroding the skin and causing great damage to the skin. Frequent use of detergents can also cause butterfly spots on the face.

2.Hinder wound healing

Fluorescent agents can also cause human cells to mutate, and their toxicity accumulates in the liver or other important organs, becoming a potential carcinogen. Damage to the blood system: Chemical substances can easily contaminate human blood. Although blood has a certain whitening ability, trace amounts of harmful substances entering it will be diluted, decomposed, adsorbed and excreted. However, long-term and large amounts of toxic substances pouring into people will inevitably lead to qualitative changes. Chemicals in cleaning products enter the blood circulation and damage the cell membrane of red blood cells, causing hemolysis.

The power of detergents PPT, part three: thinking

think

Since natural water bodies have self-purification capabilities, can we discharge pollutants into the water without restrictions?

The self-purification ability of water bodies is limited, and the self-purification abilities of different types of water bodies are different.

After reading this, do you know how Minamata disease occurs?

Mercury-containing waste can poison fish, and cats and humans can suffer from neurotoxicity after eating poisoned fish.

The power of detergents PPT, part 4: water pollution phenomena

water pollution phenomenon

Eutrophication of water bodies - one of the main problems of fresh water pollution

Marine water pollution - oil spill

(1) Pollutants: petroleum and petroleum products

Because oil is lighter than water, it floats on the water after entering the sea and expands into an oil film. The bright oil film gradually becomes thinner and thicker, and gradually expands. The expansion area of ​​each liter of oil can reach 1,000 to 10,000 square meters, and then breaks into flakes, A ribbon-like oil film that migrates with the wind. Asphalt blocks formed from the oxidized residue of petroleum can float on the sea surface for a long time.

(2) Common areas:

Around the world's major harbors, major shipping routes, and offshore oil wells.

think:

1. Why does this child want to build factories and residential buildings downstream of the river?

2. Why are vegetable fields and pastures located in the upper reaches of the river?

Keywords: Hunan Education Edition sixth grade science PPT courseware for the second volume free download, PPT download of the power of detergents, .PPT format;

For more information about the PPT courseware "The Power of Cleaners", please click on the Power of Cleaners ppt tab.

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Update Time: 2024-11-20

This template belongs to science courseware Hunan Education Edition Sixth Grade Science Volume 2 industry PPT template

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