” Let there be work, bread, water and salt for all ” – Nelson Mandela
Water is chemically known as H2O – that is, 2 atoms of Hydrogen stuck to one Oxygen. This assembly is kept together by their attraction to each other at the atomic level. Thank you Pinterest. Hey – maybe its the water inside us that makes us attracted to one another ! I wonder?
Because of their different electrical configurations, water molecule also has a negative and positive pole – just like in a magnet. Oh ! and just like us !!! – because most Plant Specialists employees have a magnetic personality. !!!! Thank you CHEGG.com
This magnetism permits them to arrange in a specific pattern when grouped together – like in a liquid. It is what determines the properties of liquid water. It also makes the Hydrogen atoms “sticky” – they become attracted to and face each other. This phenomenon is called “hydrogen bonding”. When inside a tree (inside the vessels that conduct the water) they line up and form a chain. Thank you U of Arizona !
Water, thus, reaches the leaves by a simple means. The water molecules are used up inside the leaf either by photosynthesis to produce sugar or transpiration to cool the leaf.
As these get used up, they pulled on the next available nearest molecule. Since water molecules in the leaf are also linked to the ones in the stem and so forth down the trunk – this long chain of water molecules moves up! That is how water gets to the top of a tree – pulled up one by one!!!!! Thank you David Nelson !!!
A few other mechanisms like the stickiness of water on the vessels (adhesion and cohesion) and the pressure of the water itself in the root area (called capillary action) also help get water up a tree – but these are minor ! Thank you Phschool.com
When water is cooled down the distances between molecules becomes smaller. The more energy you remove (cooling) the closer they get. At some point they get so close they form what we call ice. Water vapor on the other hand, is the reverse of this. The molecules are so far apart they no longer touch. Thank you U of Texas!
Written by our in house Horticulturalist Peter Morris BSc. MSc. MBA