The electrons in the water molecule are shared by oxygen and hydrogen atoms. However, the shared electrons are attracted more strongly by the oxygen nucleus than by the hydrogen nuclei. The water molecule therefore has partically positive and negative ends, or poles.
The bond between water molecules is called the hydrogen bond.
Starch forms a gel in water due to the interaction between starch molecules and water molecules. When starch is heated in water, the granules swell and absorb water, causing them to burst and release amylose and amylopectin molecules. These molecules form a network that traps water, leading to the formation of a gel.
The dehydration reaction that forms bonds between molecules is typically a condensation reaction. In this process, a water molecule is removed to form a bond between two molecules. It is a common mechanism for building larger molecules like proteins, carbohydrates, and nucleic acids.
Water is composed of molecular bonds, but forms hydrogen bonds with other water molecules. Hydrogen bonds are not actual bonds, but they cause an attraction between the water molecules, which is why water is adhesive.
Carbon dioxide is unstable in water. It forms a equilibrium changing between aqueous and gaseous form. This makes it impossible to tell how many molecules are in water.
Water is composed of molecular bonds, but forms hydrogen bonds with other water molecules. Hydrogen bonds are not actual bonds, but they cause an attraction between the water molecules, which is why water is adhesive.
Hydrogen bonding is the type of bond that forms between water molecules and contributes to cohesion. It occurs between the hydrogen atom of one water molecule and the oxygen atom of another water molecule.
A concave meniscus forms in a graduated cylinder with water due to adhesive forces between the water molecules and the walls of the cylinder. This causes the water to cling to the walls, resulting in a concave shape.
An example of cohesion is when water forms droplets on a leaf due to the attraction between water molecules. An example of adhesion is water sticking to the sides of a glass due to the attraction between water molecules and the glass molecules.
When sugar dissolves in water, it forms a homogeneous solution, with sugar molecules (sucrose) dispersed throughout the water molecules. The process is a physical change, not a chemical reaction, and involves the breaking of intermolecular forces between the sugar molecules, allowing them to mix with the water molecules.
No, in water, the attraction between H2 and O is a covalent bond that forms the water molecule. Adhesion refers to the attraction between different molecules, while cohesion refers to the attraction between the same molecules. In water, the attraction between H2O molecules is cohesion, and the attraction between water molecules and other substances is adhesion.
The slightly negative charge on the oxygen atom of one water molecule forms a weak electrostatic attraction between the slightly positive charge on a hydrogen atom of another water molecule. This is called a hydrogen bond. The hydrogen bonding between the water molecules is why water is highly cohesive.