CHEM 1A Chapter : Matter and Energy
![CHEM 1A Full Course Notes](https://new-docs-thumbs.oneclass.com/doc_thumbnails/list_view/2177879-class-notes-us-uc-irvine-chem-1a-lecture3.jpg)
44
CHEM 1A Full Course Notes
Verified Note
44 documents
Document Summary
Chemical principles: the quest for insight by atkins and jones. Matter: anything that has mass and takes up space. Physical property: a characteristic of a substance that can be observed or measured without changing the substances" identity: melting point, boiling point, color, mass, temperature, color, state (solid, liquid, or gas, density. Physical change: the identity of the substance does not change, only its physical properties: melting, freezing, boiling, crystallization, sublimation (from solid directly to gas, deposition (from gas directly to solid. Chemical property: any of the properties of matter that may only be observed and measured by performing a chemical change or reaction: reactivity with other chemicals, toxicity, flammability. Chemical change: the process by which a substance is transformed into a different substance. Si units are internationally accepted: meter length, kilogram mass, second time, temperature kelvin (not degrees kelvin , electric current ampere, amount of substance mole, luminous intensity candela.