Water molecules

-




Describe the water molecule:





A water molecule consists of 2 hydrogen atoms bonded to an oxygen atom, and its overall structure is bent.


                                               The properties of water

                         














Water is cohesive because water molecules stick together.



Water is adhesive because water molecules tend to attract to other 
substances.



Water has high surface tension because water is extremely cohesive, and it is difficult to break the surface of water.




Water is good at capillary action because its cohesive and adhesive.





Water has high heat capacity because the amount of heat energy required to increase water's temperature is relatively high.




              Ice is less dense than liquid water because water expands slightly upon freezing.




Water is "Universal Solvent" because it can dissolve many substances 


Why do we need to drink water?


Water is essential to our health. It is necessary for many of our body's functions, such as delivering nutrition to cells, removing waste, protecting bones and organs, and maintaining body temperature.


Benefits for drinking water

1. Increases Energy & Relieves Fatigue

2. Promotes Weight Loss

3. Flushes Out Toxins

4. Improves Skin Complexion

How much water should you drink daily?




Children aged 4 to 8 require five cups every day. Older kids should drink seven to eight glasses of water a day. Teenagers need 8–11 cups daily, adult females require 9 cups, while adult males needed 13 cups. 

 


LAB REPORT:

 Describe briefly the water experiments you did.

Properties of water station lab: To gain more knowledge about water and its properties, we tested water interaction with itself and other substances, and waters ability and inability to dissolve substances 



Comments

Post a Comment

Popular posts from this blog

Lipids

-
Image
  Lipids Fatty acids and Glycerol are the monomers for lipids  Lipids are composed of carbon, hydrogen, and oxygen atoms, and in some cases contain phosphorus, nitrogen sulfur, and other elements. Types of lipids: Triglycerides They are the main form of lipids in plants and animals Example: Avocado, oil, meat, nuts, butter, and etc.. Phospholipids Example: Cell membrane is a phospholipid bilayer Waxes Example: Beeswax, earwax, and cuticle of leaf Steroids  Example: Cholesterol, Hormones, And Vitamins     Lipids are important in the diet because they are energy sources and as sources of fatty acids. They also serve as structural components of cell membranes. 20-35% of our food intake should be from lipids Lab Report test station 4:  For this experiment we wanted to see which food has the most amount of lipids, so we had 4 test tubes and in test tube 1 we put 10 drops of water, in test tube 2 we put 10 drops of milk, in test tube 3 we put 10 drops of soda, an...
Read more

Carbohydrates

-
Image
 Carbohydrates  Hydrocarbons • Compounds that contain only carbon and hydrogen are called hydrocarbons. • Carbon often forms nonpolar covalent bonds with hydrogen. • We often use hydrocarbons in our daily life as fuels: Propane in a gas grill- Butane in a lighter are both hydrocarbons. • Methane (CH4) , the simplest hydrocarbon molecule, consists of a central carbon atom bonded to four hydrogen atoms. What are Carbohydrates? • Carbohydrates are organic compounds of carbon, hydrogen and oxygen. • The general chemical formula of Carbohydrates is (CH2O)n or CnH2nOn • Carbohydrates have a ring like structure. • Most carbohydrates are hydrophilic and soluble in water. • Carbohydrates are found in living tissues and foods in the form of starch, cellulose, and sugars. Carbohydrates Functions 1. Carbohydrates are used as a short-term energy source. Cells break down carbohydrates (glucose) to produce ATP energy molecules quickly. 2. Carbohydrates provide structural support to cells. Th...
Read more