c1 Flashcards
Describe particles in a solid [1]
Particles only vibrate about fixed positions, regular structure
Describe particles in a liquid [1]
Particles can move around each other, collide often
Describe particles in a gas [1]
Particles more freely and at random in all directions, collide less often than in a liquid
Explain what happens to the temperature during melting [1]
The temperature stays constant as energy is used to weaken the intermolecular forces and change the substance from a solid to a liquid
Explain what happens to the temperature during boiling [1]
The temperature stays constant as energy is used to break the intermolecular forces and change the substance from a liquid to a gas
Describe an atom [1]
The smallest part of an element
Describe a molecule [1]
A group of atoms covalently bonded together (e.g O₂ or H₂O)
Describe an ion [1]
A charged particle (e.g Na+ or SO₄²-)
Describe diffusion [1]
The process by which different substances mix as a result of the random motions of their particles
Explain the factors that effect diffusion [2]
The higher the temperature the faster the rate of diffusion. The greater the molecular mass the slower the rate of diffusion.
