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what is a compound
a substance made of atoms of two or more different elements that are chemically combined
what IS a pure substance
a molecule that has a fixed composition and definite proporties, can be a single element,has chemically combined components
very easy to observe,can be observed and measured without changing the composition of matter
examples of physical properties
color,texture,shape,odor,melting point,boiling oint,strength, hardness,electricity,and magnetism
what is the kinetic theory?
all matter is made of atoms and molecules that act like tiny particles. these particles are ALWAYS in motion. At the same temperature , heavier particles move slower than lighter ones.
the maximum amt. of a solute dissolved in a given quantity of solvent at a given temperature and pressure
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