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Text Elements
Elements, molecules, cells, people, air water, paper
dreams, energy (light, heat), emotions
A pure substance is an element or a compound ( h2O ) hydrogen + oxygen
Contains only 1 type of particle elements or compounds
Combinations of things are mixtures oil and water. soluble mixtures are disolvable one disolves in the other. insolvable means not disolvable. contain 2 or more different types of particles
- all substances keep their properties within mixture*
Simplest form of matter Every atom is the same Cannot be broken down into anything different
2 or more different elements chemically bonded together to form molecules
( 1 capital letter)
H2O, NaCl, CO2
(atleast 2 capital letters)
Au = gold H = hydrogen
Elements: Represented by chemical symbols & found on periodic table Can be monatomic ( Cu, Ag, Fe ) or diatomic (Br2)
Compounds: Can be seperated into different elements by chemical means Has properties different than the properties of the individual elements that make it up
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