The handwritten newspaper about water 22 is simple and beautiful.

Introduction: Water is the source of life and the foundation of human existence. We can live without mobile phones, electricity and all kinds of entertainment, but we can never live without water, so once water disappears, our life will eventually end. So, what are the handwritten newspapers about water? The following is the handwritten newspaper picture of 22 Water I brought, which is simple and beautiful. Interested friends come and have a look.

Basic introduction of water

Water is an inorganic substance composed of hydrogen and oxygen, and it is nontoxic. It is a colorless and odorless transparent liquid at normal temperature and pressure, which is called the source of human life. Water, including natural water (rivers, lakes, atmospheric water, seawater, groundwater, etc.) (containing impurities), distilled water is pure water, and artificial water (water obtained by combining hydrogen and oxygen atoms through chemical reaction). Water is one of the most common substances on the earth, an important resource for all life, including inorganic compounds and human beings, and the most important component of organisms. Water plays an important role in the evolution of life. It is a kind of non-renewable resources in a narrow sense and renewable resources in a broad sense.

pure water can conduct electricity, but it is very weak (conductivity can be ignored in daily life), so it belongs to extremely weak electrolyte. Water in daily life has more positive and negative ions due to the dissolution of other electrolytes, and its conductivity is enhanced.

official name

according to IUPAC regulations, there are only two official names for H2O molecules: Water and Oxidane.

Folk Naming

According to its chemical formula, people give water the following nicknames: hydrogen oxide and hydrogen monoxide;

The naming rules of other compounds of VIA and VIIA are analogous: hydroxide acid, acid oxygen;

The naming rules of metal hydroxides (alkalis) are analogous: hydrogen hydroxide, caustic hydrogen, hydroxyl hydrogen and basic hydrogen.

although the above names are different, they all describe the same substance-water. There used to be a spoof article abroad that called water "hydrogen monoxide", which caused an uproar, which was caused by people's ignorance of these "alternative names" of water.

Although the above pronunciation can be obtained according to the chemical formula of water, only "water" and "siloxane" specified by IUPAC are official names, and other names cannot be used in formal scientific occasions. Adding an attribute before "water" can be used to distinguish special kinds of water, such as distilled water, deionized water or heavy water.

slogan for protecting water

1. It is shameful to waste water, but it is glorious to save water.

2. Strengthen urban water conservation management, and save and protect urban water resources.

3. Strive to create a water-saving city and implement sustainable development.

4. Please cherish every drop of water.

5. Protect the ecology and maintain the healthy life of the river.

6. If human beings don't save water and protect the environment from now on, the last drop of water they see will be their own tears.

7. Saving water is the responsibility and obligation of every citizen.

8. Save water, starting with me.

9. Save water, starting with drip.

1. Saving water is an important measure to implement the sustainable development strategy.

11. Water shortage in the world, China and cities, please save water.

12. Use water scientifically and harmoniously.

13. Pay equal attention to both open source and throttling, give priority to throttling, focus on pollution control, open source scientifically, and make comprehensive utilization.

14. Saving water and protecting water resources are the responsibilities of the whole society.

15. The state practices planned water use and strictly saves water.