Today we learned about Water, which is the most important resources of Earth. In chemistry, H2O also known as Water which consisting 3 atoms. Oxygen atoms form a covalent bond with hydrogen atoms. We know that oxygen has a
Today we learned about Water, which is the most important resources of Earth. In chemistry, H2O also known as Water which consisting 3 atoms. Oxygen atoms form a covalent bond with hydrogen atoms. We know that oxygen has a greater electronegativity than hydrogen. So that oxygen creates partial negative charges and hydrogen creates partial positive charge. Surface tension is the inward force pull to tend the aruface area of liquid. Molar mass of water is 18g/mol but boiling point is 100 degree celcius. Hydrogen bonding gives high surface tension, low vapor pressure, and high boiling point.
We learned about the Graham’s Law which is diffusion and effusion. Definition of diffusion is the tendency of molecules to move toward areas of lower concentration until it ùiorm throughout. Perfume can be an example, when you open the perfume bottle, we can be able to smell, the molecules in perfume can evaporate and diffuse, which like spreading out through the air in the room. Another process involves movement of molecules is effusion, which is like a gas that can escape through a small hole in its c