Chemistry LC2 Flashcards
What is a compound?
A compound is a molecule with more than one type of atom
What is a molecule?
A molecule is more than one atom bonded chemically together
Compounds that have 2 types of atoms in them end in…
Ide
Compounds that have 3 types of atoms in one being oxygen ends in
Ate
What is a mixture?
A mix of atoms and molecules NOT chemically bonded together.
What is Brownian Motion?
It is the random movement of particles suspended in a fluid.
What is diffusion?
Diffusion is the movement of particles from an area of high concentration to an area of low concentration.
What is a physical change?
Change of the state of matter
What is a chemical change?
Change of the chemical itself E.g. Carbon becomes CO2
solid to gas?
Sublimation
gas to solid?
Deposition
Why do substances change volume when they are heated?
Because the particles gain thermal energy which means they move more and need to take up more space
what is an atom?
A single particle of an element
What is an element?
A single type of atom
Independent variable?
The one you change
