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Chem Exam Ch. 1
Chemistry study guide
| Question | Answer |
|---|---|
| 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 |