Explain why water molecules are described as “sticky”
is it because hydrogen bond that bonds together.
Yes, you are correct. Water molecules are described as "sticky" because of the hydrogen bonding that occurs between them. Hydrogen bonding happens when the positively charged hydrogen atom of one water molecule is attracted to the negatively charged oxygen atom of another water molecule. This creates a weak electrical attraction between the molecules, leading to the formation of hydrogen bonds.
Due to the hydrogen bonding, water molecules tend to stick together, making them cohesive. This cohesion is why water can form droplets and exhibit surface tension. It also allows water to move as a single entity, such as when it flows through plants or travels in a continuous stream.
The stickiness of water molecules also contributes to various properties of water, including its high boiling point, its ability to dissolve many substances, its thermal stability, and its role as a medium for chemical reactions in biological systems.