The Matter in Our Surroundings Notes

The Matter in Our Surroundings Notes Atom - The smallest particle of any substance. Element - The purest form of any matter. Example - Hydrogen, Oxygen, Nitrogen etc. Compound - The specific ratio of more than one element in combined bond. Molecule - A group of two or more atoms held together by chemical bond. OR The simplest and structural unit an element or compound. for example in H2O (Water) there is one molecule on water. Cohesive force - Force of attraction between particles of matter, called cohesive force. Diffusion - This intermixing of particles of two different types of matter on their own is called diffusion. Kelvin scale - The unit of Kelvin scale is "Kelvin" and has the same magnitude of one degree Celsius. The zero point of kelvin scale is called absolute zero...