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Chem Exam Ch. 1

Chemistry study guide

study of the comosition and structure fo materials and the changes that materials undergo best describes the science of chemistry
the branch of chemistry conscerned with the properties,changes, and relationships between energy and matter is physical science
a physical property may be investigated by melting ice
two features that distinguish matter are mass and volume
the particles in a solid are packed closely together
the state of matter in which a material has definite shape and definite volume is the solid state
under ordinatry conditions of temperatrue and pressure, the particles in a gas are very far from each other
physical means can be used to separate mixtures
based on there location in the periodic table oxygen and selenium have similiar properties
the state of matter in which a material has a definite volume but no definite shape is liquid
Created by: Terry22